Страница 39 - гдз по химии 10 класс учебник Еремин, Кузьменко

Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета

Авторы: Еремин В. В., Кузьменко Н. Е., Теренин В. И., Дроздов А. А., Лунин В. В.

Тип: Учебник

Издательство: Просвещение

Год издания: 2023 - 2026

Уровень обучения: углублённый

Цвет обложки: белый, зелёный с радугой

Допущено Министерством просвещения Российской Федерации

Cтраница 39

App\Models\BookPage {#1024 // resources/views/models/book_page/default.blade.php
  #connection: "mysql"
  #table: "book_pages"
  #primaryKey: "id"
  #keyType: "int"
  +incrementing: true
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  #escapeWhenCastingToString: false
  #attributes: array:20 [
    "id" => 925935
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    "updated_at" => null
    "field_page_start" => "39"
    "field_url" => "/10-klass/himiya/eremin-uchebnik/page-39"
    "field_display_title" => "39"
    "field_folder" => "1"
    "field_image_name" => "39"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#331
      #items: []
      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1029
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        0 => App\Models\Book {#1026
          #connection: "mysql"
          #table: "books"
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          +incrementing: false
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          #attributes: array:50 [
            "id" => 1003
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
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            "field_subject" => Illuminate\Database\Eloquent\Collection {#342
              #items: array:1 [
                0 => App\Models\Term {#1023
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                }
              ]
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            }
            "field_class" => Illuminate\Database\Eloquent\Collection {#333
              #items: array:1 [
                0 => App\Models\Term {#1033
                  #connection: "mysql"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1030
              #items: array:1 [
                0 => App\Models\Term {#1032
                  #connection: "mysql"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author" => Illuminate\Database\Eloquent\Collection {#1034
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                0 => App\Models\Term {#1035
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                }
                1 => App\Models\Term {#1036
                  #connection: "mysql"
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                }
                2 => App\Models\Term {#1037
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
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                }
                3 => App\Models\Term {#1038
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
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                  +preventsLazyLoading: false
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                  +timestamps: true
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                  #visible: []
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                  #guarded: array:1 [ …1]
                }
                4 => App\Models\Term {#1039
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [ …12]
                  #original: array:12 [ …12]
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1040
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1041
              #items: array:1 [
                0 => App\Models\Term {#1042
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #attributes: array:10 [ …10]
                  #original: array:10 [ …10]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_country" => Illuminate\Database\Eloquent\Collection {#1043
              #items: array:1 [
                0 => App\Models\Term {#1044
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_city" => Illuminate\Database\Eloquent\Collection {#1045
              #items: array:1 [
                0 => App\Models\Term {#1046
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_series" => Illuminate\Database\Eloquent\Collection {#1047
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1048
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1049
              #items: array:1 [
                0 => App\Models\Term {#1050
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                }
              ]
              #escapeWhenCastingToString: false
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            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1051
              #items: array:1 [
                0 => App\Models\Term {#1052
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publication_number" => "10"
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1053
              #items: array:1 [
                0 => App\Models\Term {#1054
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
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                }
              ]
              #escapeWhenCastingToString: false
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            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1055
              #items: array:1 [
                0 => App\Models\Term {#1039}
              ]
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
            "field_cover_description" => "с радугой"
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            "field_publication_year_until" => null
            "field_part" => ""
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            "field_second_foreign_language" => null
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            "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
            "field_reserve_field" => null
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            "field_tasks_count" => "697"
            "field_priority" => "10"
            "field_default_folder" => "/himiya_10/eremin-u23/"
            "field_isbn" => null
            "field_cover" => array:1 [
              0 => "/media/himiya_10/eremin-u23/covers/cover1.webp"
            ]
            "field_cover_alts" => array:1 [
              0 => ""
            ]
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              0 => array:4 [
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                "width" => "1200"
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              ]
            ]
            "field_popular_book" => null
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              #items: []
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            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1057
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            }
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              #items: []
              #escapeWhenCastingToString: false
            }
            "field_url" => "/10-klass/himiya/eremin-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1059
              #items: array:2 [
                0 => App\Models\Term {#1060
                  #connection: "mysql"
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            "field_subject" => Illuminate\Database\Eloquent\Collection {#342}
            "field_class" => Illuminate\Database\Eloquent\Collection {#333}
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1030}
            "field_author" => Illuminate\Database\Eloquent\Collection {#1034}
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1040}
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1041}
            "field_country" => Illuminate\Database\Eloquent\Collection {#1043}
            "field_city" => Illuminate\Database\Eloquent\Collection {#1045}
            "field_series" => Illuminate\Database\Eloquent\Collection {#1047}
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1048}
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1049}
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1051}
            "field_publication_number" => "10"
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1053}
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1055}
            "field_under_the_edition_degree" => "доктор химических наук, академика РАН"
            "field_cover_description" => "с радугой"
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            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1057}
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            "field_url" => "/10-klass/himiya/eremin-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1059}
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              "class_subject" => 500
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "content" => Illuminate\Database\Eloquent\Collection {#1062
      #items: array:1 [
        0 => App\Models\Element {#1063
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 1100328
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1064
              #items: array:1 [
                0 => App\Models\Edition {#1065
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
                  #original: array:21 [ …21]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "book_page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "39-1.jpg"
                "alt" => null
                "width" => "1132"
                "height" => 1600
                "path" => "/media/himiya_10/eremin-u23/0-1/39-1.webp"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 1100328
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1064}
            "book_page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "39-1.jpg"
                "alt" => null
                "width" => "1132"
                "height" => 1600
                "path" => "/media/himiya_10/eremin-u23/0-1/39-1.webp"
              ]
            ]
          ]
          #changes: []
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          #dateFormat: null
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          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "next" => Illuminate\Database\Eloquent\Collection {#3756
      #items: array:1 [
        0 => App\Models\BookPage {#3705
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:20 [
            "id" => 925936
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "40"
            "field_url" => "/10-klass/himiya/eremin-uchebnik/page-40"
            "field_display_title" => "40"
            "field_folder" => "1"
            "field_image_name" => "40"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#3708
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#3706
              #items: array:1 [
                0 => App\Models\Book {#3709
                  #connection: "mysql"
                  #table: "books"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:50 [ …50]
                  #original: array:50 [ …50]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "content" => Illuminate\Database\Eloquent\Collection {#3744
              #items: array:1 [
                0 => App\Models\Element {#3745
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "925937"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#3753
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:20 [
            "id" => 925936
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "40"
            "field_url" => "/10-klass/himiya/eremin-uchebnik/page-40"
            "field_display_title" => "40"
            "field_folder" => "1"
            "field_image_name" => "40"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#3708}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#3706}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "content" => Illuminate\Database\Eloquent\Collection {#3744}
            "next" => array:2 [
              "refs" => "925937"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#3753}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#3707
      #items: array:1 [
        0 => App\Models\BookPage {#3578
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:20 [
            "id" => 925934
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "38"
            "field_url" => "/10-klass/himiya/eremin-uchebnik/page-38"
            "field_display_title" => "38"
            "field_folder" => "1"
            "field_image_name" => "38"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#3574
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#3580
              #items: array:1 [
                0 => App\Models\Book {#3581
                  #connection: "mysql"
                  #table: "books"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:50 [ …50]
                  #original: array:50 [ …50]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "content" => Illuminate\Database\Eloquent\Collection {#3616
              #items: array:1 [
                0 => App\Models\Element {#3617
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "925933"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#3625
              #items: array:4 [
                0 => App\Models\Task {#3626
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#3666
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#3679
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Task {#3692
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:20 [
            "id" => 925934
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "38"
            "field_url" => "/10-klass/himiya/eremin-uchebnik/page-38"
            "field_display_title" => "38"
            "field_folder" => "1"
            "field_image_name" => "38"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#3574}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#3580}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "content" => Illuminate\Database\Eloquent\Collection {#3616}
            "next" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "925933"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#3625}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "tasks" => Illuminate\Database\Eloquent\Collection {#1071
      #items: array:11 [
        0 => App\Models\Task {#1072
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 662826
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1073
              #items: array:1 [
                0 => App\Models\Term {#1074
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                   …21
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1075
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1076
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1082
              #items: array:2 [
                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1092
              #items: array:3 [
                0 => App\Models\Element {#1093 …30}
                1 => App\Models\Element {#1095 …30}
                2 => App\Models\Element {#1103 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "662827"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662825"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1111
              #items: array:1 [
                0 => App\Models\Book {#1026}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 662826
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1073}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1075}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1076}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1082}
            "content" => Illuminate\Database\Eloquent\Collection {#1092}
            "next" => array:2 [
              "refs" => "662827"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662825"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1111}
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1112
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 662827
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-6"
            "field_display_title" => "6"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1113
              #items: array:1 [
                0 => App\Models\Term {#1074 …21}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1114
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1115
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1116
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                1 => App\Models\Branch {#1083 …30}
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            }
            "content" => Illuminate\Database\Eloquent\Collection {#1117
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                1 => App\Models\Element {#1120 …30}
                2 => App\Models\Element {#1122 …30}
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        2 => App\Models\Task {#1125
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                0 => App\Models\Branch {#1077 …30}
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1129
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                1 => App\Models\Branch {#1083 …30}
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            "content" => Illuminate\Database\Eloquent\Collection {#1130
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                1 => App\Models\Element {#1133 …30}
                2 => App\Models\Element {#1135 …30}
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        3 => App\Models\Task {#1138
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                0 => App\Models\Branch {#1077 …30}
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            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1142
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                1 => App\Models\Branch {#1083 …30}
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        4 => App\Models\Task {#1151
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1155
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                1 => App\Models\Branch {#1083 …30}
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        5 => App\Models\Task {#1164
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                0 => App\Models\Branch {#1077 …30}
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1168
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                1 => App\Models\Branch {#1083 …30}
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                1 => App\Models\Element {#1172 …30}
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        6 => App\Models\Task {#1177
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                0 => App\Models\Branch {#1077 …30}
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                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
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            "content" => Illuminate\Database\Eloquent\Collection {#1182
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            "book" => Illuminate\Database\Eloquent\Collection {#1189
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            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-11"
            "field_display_title" => "11"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1178}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1179}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1180}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1181}
            "content" => Illuminate\Database\Eloquent\Collection {#1182}
            "next" => array:2 [
              "refs" => "662833"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662831"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1189}
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        7 => App\Models\Task {#1190
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 662833
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-12"
            "field_display_title" => "12"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1191
              #items: array:1 [
                0 => App\Models\Term {#1074 …21}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1192
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1193
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1194
              #items: array:2 [
                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1195
              #items: array:3 [
                0 => App\Models\Element {#1196 …30}
                1 => App\Models\Element {#1198 …30}
                2 => App\Models\Element {#1200 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "662834"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662832"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1202
              #items: array:1 [
                0 => App\Models\Book {#1026}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 662833
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-12"
            "field_display_title" => "12"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1191}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1192}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1193}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1194}
            "content" => Illuminate\Database\Eloquent\Collection {#1195}
            "next" => array:2 [
              "refs" => "662834"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662832"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1202}
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        8 => App\Models\Task {#1203
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 662834
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-13"
            "field_display_title" => "13"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1204
              #items: array:1 [
                0 => App\Models\Term {#1074 …21}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1205
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1206
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1207
              #items: array:2 [
                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1208
              #items: array:3 [
                0 => App\Models\Element {#1209 …30}
                1 => App\Models\Element {#1211 …30}
                2 => App\Models\Element {#1213 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "662835"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662833"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1215
              #items: array:1 [
                0 => App\Models\Book {#1026}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 662834
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-13"
            "field_display_title" => "13"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1204}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1205}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1206}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1207}
            "content" => Illuminate\Database\Eloquent\Collection {#1208}
            "next" => array:2 [
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            "previous" => array:2 [
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              "type" => "task"
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            "book" => Illuminate\Database\Eloquent\Collection {#1215}
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
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          ]
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            0 => "*"
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        }
        9 => App\Models\Task {#1216
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 662835
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-14"
            "field_display_title" => "14"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1217
              #items: array:1 [
                0 => App\Models\Term {#1074 …21}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1218
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1219
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1220
              #items: array:2 [
                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1221
              #items: array:3 [
                0 => App\Models\Element {#1222 …30}
                1 => App\Models\Element {#1224 …30}
                2 => App\Models\Element {#1226 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "662836"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662834"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1228
              #items: array:1 [
                0 => App\Models\Book {#1026}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 662835
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-14"
            "field_display_title" => "14"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1217}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1218}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1219}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1220}
            "content" => Illuminate\Database\Eloquent\Collection {#1221}
            "next" => array:2 [
              "refs" => "662836"
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            ]
            "previous" => array:2 [
              "refs" => "662834"
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            "book" => Illuminate\Database\Eloquent\Collection {#1228}
            "page" => array:2 [
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              "type" => "book_page"
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          #visible: []
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            0 => "*"
          ]
        }
        10 => App\Models\Task {#1229
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          +exists: true
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          #escapeWhenCastingToString: false
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            "id" => 662836
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            "updated_at" => null
            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-15"
            "field_display_title" => "15"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1230
              #items: array:1 [
                0 => App\Models\Term {#1074 …21}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "field_description_top" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1231
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1232
              #items: array:1 [
                0 => App\Models\Branch {#1077 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1233
              #items: array:2 [
                0 => App\Models\Branch {#1077 …30}
                1 => App\Models\Branch {#1083 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1234
              #items: array:3 [
                0 => App\Models\Element {#1235 …30}
                1 => App\Models\Element {#1237 …30}
                2 => App\Models\Element {#1239 …30}
              ]
              #escapeWhenCastingToString: false
            }
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              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1241
              #items: array:1 [
                0 => App\Models\Book {#1026}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "925935"
              "type" => "book_page"
            ]
          ]
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            "field_page_start" => "39"
            "field_page_end" => null
            "field_url" => "/10-klass/himiya/eremin-uchebnik/05-15"
            "field_display_title" => "15"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1230}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1231}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1232}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1233}
            "content" => Illuminate\Database\Eloquent\Collection {#1234}
            "next" => array:2 [
              "refs" => "662837"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "662835"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1241}
            "page" => array:2 [
              "refs" => "925935"
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            ]
          ]
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          #touches: []
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:20 [
    "id" => 925935
    "created_at" => "2026-02-28 22:16:36"
    "updated_at" => null
    "field_page_start" => "39"
    "field_url" => "/10-klass/himiya/eremin-uchebnik/page-39"
    "field_display_title" => "39"
    "field_folder" => "1"
    "field_image_name" => "39"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#331}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1029}
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "content" => Illuminate\Database\Eloquent\Collection {#1062}
    "next" => array:2 [
      "refs" => "925936"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "925934"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1071}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Химия, 10 класс Учебник, авторы: Еремин Вадим Владимирович, Кузьменко Николай Егорович, Теренин Владимир Ильич, Дроздов Андрей Анатольевич, Лунин Валерий Васильевич, издательство Просвещение, Москва, 2023, белого цвета, страница 39
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