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Номер 9, страница 68 - гдз по химии 10 класс учебник Еремин, Кузьменко
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
Популярные ГДЗ в 10 классе
Глава 1. Повторение и углубление знаний. Параграф 9. Растворы - номер 9, страница 68.
App\Models\Task {#1030 // resources/views/models/task/default.blade.php #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" => 662883 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "68" "field_page_end" => null "field_url" => "/10-klass/himiya/eremin-uchebnik/09-9" "field_display_title" => "9" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037 #items: array:1 [ 0 => App\Models\Term {#1036 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #original: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #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 "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1046 #items: array:1 [ 0 => App\Models\Branch {#1045 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 662698 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Повторение и углубление знаний" "field_branch_order" => "1" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1050 #items: array:1 [ 0 => App\Models\Term {#1047 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #original: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "5" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1086 #items: array:1 [ 0 => App\Models\Book {#1049 #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 [ "id" => 1003 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1051 #items: array:1 [ 0 => App\Models\Term {#1048 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6495 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Химия" "field_abbreviated_name" => null "field_cases" => array:6 [ …6] "field_foreign_lang_name" => null "field_short_name" => null "field_subject_type" => "technical_subject" "field_translit" => "himiya" ] #original: array:10 [ "id" => 6495 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Химия" "field_abbreviated_name" => null "field_cases" => array:6 [ …6] "field_foreign_lang_name" => null "field_short_name" => null "field_subject_type" => "technical_subject" "field_translit" => "himiya" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1052 #items: array:1 [ 0 => App\Models\Term {#1053 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 5459 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "10" "field_cases" => array:6 [ …6] "field_translit" => "desjatyj" ] #original: array:6 [ "id" => 5459 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "10" "field_cases" => array:6 [ …6] "field_translit" => "desjatyj" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_publisher" => Illuminate\Database\Eloquent\Collection {#1054 #items: array:1 [ 0 => App\Models\Term {#1055 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 5153 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Просвещение" "field_cases" => null "field_translit" => "prosveschenie" ] #original: array:6 [ "id" => 5153 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Просвещение" "field_cases" => null "field_translit" => "prosveschenie" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_author" => Illuminate\Database\Eloquent\Collection {#1056 #items: array:5 [ 0 => App\Models\Term {#1057 #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 [ "id" => 4330 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Еремин" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Вадим" "field_patronymic" => "Владимирович" "field_surname_rp" => null ] #original: array:12 [ "id" => 4330 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Еремин" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Вадим" "field_patronymic" => "Владимирович" "field_surname_rp" => null ] #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\Term {#1058 #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 [ "id" => 4876 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Кузьменко" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Николай" "field_patronymic" => "Егорович" "field_surname_rp" => null ] #original: array:12 [ "id" => 4876 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Кузьменко" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Николай" "field_patronymic" => "Егорович" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Term {#1059 #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 [ "id" => 5912 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Теренин" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Владимир" "field_patronymic" => "Ильич" "field_surname_rp" => null ] #original: array:12 [ "id" => 5912 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Теренин" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Владимир" "field_patronymic" => "Ильич" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Term {#1060 #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 [ "id" => 4290 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Дроздов" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Андрей" "field_patronymic" => "Анатольевич" "field_surname_rp" => null ] #original: array:12 [ "id" => 4290 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Дроздов" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Андрей" "field_patronymic" => "Анатольевич" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 4 => App\Models\Term {#1061 #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 [ "id" => 5031 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Лунин" "field_bio" => null "field_degree_rp" => "доктор химических наук, академика РАН" "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Валерий" "field_patronymic" => "Васильевич" "field_surname_rp" => "Лунина" ] #original: array:12 [ "id" => 5031 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Лунин" "field_bio" => null "field_degree_rp" => "доктор химических наук, академика РАН" "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Валерий" "field_patronymic" => "Васильевич" "field_surname_rp" => "Лунина" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1062 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1063 #items: array:1 [ 0 => App\Models\Term {#1064 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6671 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ …6] "field_plural_form" => null "field_short_name" => null "field_short_name_foreign" => null "field_translit" => "uchebnik" ] #original: array:10 [ "id" => 6671 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ …6] "field_plural_form" => null "field_short_name" => null "field_short_name_foreign" => null "field_translit" => "uchebnik" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_country" => Illuminate\Database\Eloquent\Collection {#1065 #items: array:1 [ 0 => App\Models\Term {#1066 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 9 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ …6] "field_translit" => "rossiya" ] #original: array:6 [ "id" => 9 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ …6] "field_translit" => "rossiya" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_city" => Illuminate\Database\Eloquent\Collection {#1067 #items: array:1 [ 0 => App\Models\Term {#1068 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 15 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ …6] "field_translit" => "moskva" ] #original: array:6 [ "id" => 15 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ …6] "field_translit" => "moskva" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_series" => Illuminate\Database\Eloquent\Collection {#1069 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1070 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1071 #items: array:1 [ 0 => App\Models\Term {#1072 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 39 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "углублённый" "field_cases" => array:6 [ …6] "field_translit" => "uglublennyy" ] #original: array:6 [ "id" => 39 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "углублённый" "field_cases" => array:6 [ …6] "field_translit" => "uglublennyy" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_standart_of_education" => 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 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6706 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "ФГОС (старый)" "field_cases" => array:6 [ …6] "field_color" => null "field_end_year" => "2022" "field_start_year" => "2019" "field_translit" => "fgos-old" "field_type" => null ] #original: array:10 [ "id" => 6706 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "ФГОС (старый)" "field_cases" => array:6 [ …6] "field_color" => null "field_end_year" => "2022" "field_start_year" => "2019" "field_translit" => "fgos-old" "field_type" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_publication_number" => "10" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1075 #items: array:1 [ 0 => App\Models\Term {#1076 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #original: array:6 [ "id" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1077 #items: array:1 [ 0 => App\Models\Term {#1061} ] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => "доктор химических наук, академика РАН" "field_cover_description" => "с радугой" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "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?ts=1738768732" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp?ts=1738768732" "alt" => "" "width" => "1200" "height" => "1576" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1078 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1079 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1080 #items: [] #escapeWhenCastingToString: false } "field_url" => "/10-klass/himiya/eremin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1081 #items: array:2 [ 0 => App\Models\Term {#1082 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 45 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "белый" "field_cases" => array:6 [ …6] "field_translit" => "belyy" ] #original: array:6 [ "id" => 45 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "белый" "field_cases" => array:6 [ …6] "field_translit" => "belyy" ] #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\Term {#1083 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 47 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "зелёный" "field_cases" => array:6 [ …6] "field_translit" => "zelyonyy" ] #original: array:6 [ "id" => 47 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "зелёный" "field_cases" => array:6 [ …6] "field_translit" => "zelyonyy" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #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 "breadcrumbs" => array:3 [ "class" => 381 "subject" => 558 "class_subject" => 500 ] ] #original: array:50 [ "id" => 1003 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1051} "field_class" => Illuminate\Database\Eloquent\Collection {#1052} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1054} "field_author" => Illuminate\Database\Eloquent\Collection {#1056} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1062} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1063} "field_country" => Illuminate\Database\Eloquent\Collection {#1065} "field_city" => Illuminate\Database\Eloquent\Collection {#1067} "field_series" => Illuminate\Database\Eloquent\Collection {#1069} "field_umk" => Illuminate\Database\Eloquent\Collection {#1070} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1071} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1073} "field_publication_number" => "10" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1075} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1077} "field_under_the_edition_degree" => "доктор химических наук, академика РАН" "field_cover_description" => "с радугой" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "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?ts=1738768732" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/himiya_10/eremin-u23/covers/cover1.webp?ts=1738768732" "alt" => "" "width" => "1200" "height" => "1576" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1078} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1079} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1080} "field_url" => "/10-klass/himiya/eremin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1081} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 381 "subject" => 558 "class_subject" => 500 ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1084 #items: [] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 662698 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Повторение и углубление знаний" "field_branch_order" => "1" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1050} "field_page_start" => "5" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1086} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1084} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "parent_branches" => Illuminate\Database\Eloquent\Collection {#1121 #items: array:2 [ 0 => App\Models\Branch {#1129 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 662698 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Повторение и углубление знаний" "field_branch_order" => "1" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1130 #items: array:1 [ 0 => App\Models\Term {#1047} ] #escapeWhenCastingToString: false } "field_page_start" => "5" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1131 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1132 #items: [] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 662698 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Повторение и углубление знаний" "field_branch_order" => "1" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1130} "field_page_start" => "5" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1131} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1132} ] #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\Branch {#1133 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 662707 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Растворы" "field_branch_order" => "9" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1137 #items: array:1 [ 0 => App\Models\Term {#1134 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 32 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => "§" ] #original: array:7 [ "id" => 32 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => "§" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "59" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1136 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1135 #items: array:1 [ 0 => App\Models\Branch {#1045} ] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 662707 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Растворы" "field_branch_order" => "9" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1137} "field_page_start" => "59" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1136} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1135} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1118 #items: array:3 [ 0 => App\Models\Element {#1111 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 818331 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1103 #items: array:1 [ 0 => App\Models\Edition {#1095 #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 [ "id" => 1829 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1110 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "vadim" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1107 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1108 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1105 …2} "field_content_source" => null ] #original: array:21 [ "id" => 1829 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1110 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "vadim" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1107 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1108 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1105 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "662883" "type" => "task" ] "text" => "<p><strong>9.</strong> Смешали равные по массе порции 1,6%-х растворов сульфата меди(II) и сульфида натрия. Определите массовые доли растворённых веществ в растворе, полученном после отделения выпавшего осадка.</p>" "img" => array:1 [ 0 => array:5 [ "name" => "9-1.jpg" "alt" => null "width" => "851" "height" => 167 "path" => "/media/himiya_10/eremin-u23/0-09/9-1.webp?ts=1738779471" ] ] ] #original: array:7 [ "id" => 818331 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1103} "task" => array:2 [ "refs" => "662883" "type" => "task" ] "text" => "<p><strong>9.</strong> Смешали равные по массе порции 1,6%-х растворов сульфата меди(II) и сульфида натрия. Определите массовые доли растворённых веществ в растворе, полученном после отделения выпавшего осадка.</p>" "img" => array:1 [ 0 => array:5 [ "name" => "9-1.jpg" "alt" => null "width" => "851" "height" => 167 "path" => "/media/himiya_10/eremin-u23/0-09/9-1.webp?ts=1738779471" ] ] ] #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\Element {#1106 #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" => 818483 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1090 #items: array:1 [ 0 => App\Models\Edition {#1104 #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 [ "id" => 1830 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1102 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Ладыко (Торчило)" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1100 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_content_source" => null ] #original: array:21 [ "id" => 1830 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1102 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Ладыко (Торчило)" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1100 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "662883" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "9-1.jpg" "alt" => null "width" => "2019" "height" => 2235 "path" => "/media/himiya_10/eremin-u23/1-09/9-1.webp?ts=1738779525" ] ] ] #original: array:6 [ "id" => 818483 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1090} "task" => array:2 [ "refs" => "662883" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "9-1.jpg" "alt" => null "width" => "2019" "height" => 2235 "path" => "/media/himiya_10/eremin-u23/1-09/9-1.webp?ts=1738779525" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Element {#1098 #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" => 1515290 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1087 #items: array:1 [ 0 => App\Models\Edition {#1096 #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 [ "id" => 5553 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1093 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "2-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1092 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1091 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_content_source" => null ] #original: array:21 [ "id" => 5553 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1093 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "2-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1092 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1091 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "662883" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>$w(CuSO_4) = 1,6\% = 0,016$</p><p>$w(Na_2S) = 1,6\% = 0,016$</p><p>$m_{р-ра}(CuSO_4) = m_{р-ра}(Na_2S)$</p><p><strong>Найти:</strong></p><p>$w_{конечн}(Na_2SO_4) - ?$</p><p>$w_{конечн}(Na_2S) - ?$</p><p><strong>Решение:</strong></p><p><strong>1.</strong> Запишем уравнение реакции между сульфатом меди(II) и сульфидом натрия:</p><p>$CuSO_4 + Na_2S \rightarrow CuS \downarrow + Na_2SO_4$</p><p>В результате реакции образуется нерастворимый осадок сульфида меди(II) ($CuS$) и растворимый сульфат натрия ($Na_2SO_4$).</p><p><strong>2.</strong> Поскольку массы исходных растворов равны, примем массу каждого раствора за $m$ г. Тогда массы растворенных веществ равны:</p><p>$m(CuSO_4) = m_{р-ра}(CuSO_4) \cdot w(CuSO_4) = m \cdot 0,016 = 0,016m$ г</p><p>$m(Na_2S) = m_{р-ра}(Na_2S) \cdot w(Na_2S) = m \cdot 0,016 = 0,016m$ г</p><p><strong>3.</strong> Рассчитаем молярные массы веществ:</p><p>$M(CuSO_4) = 63,5 + 32 + 4 \cdot 16 = 159,5$ г/моль</p><p>$M(Na_2S) = 2 \cdot 23 + 32 = 78$ г/моль</p><p>$M(CuS) = 63,5 + 32 = 95,5$ г/моль</p><p>$M(Na_2SO_4) = 2 \cdot 23 + 32 + 4 \cdot 16 = 142$ г/моль</p><p><strong>4.</strong> Найдем количество вещества (моль) каждого из реагентов:</p><p>$n(CuSO_4) = \frac{m(CuSO_4)}{M(CuSO_4)} = \frac{0,016m}{159,5}$ моль</p><p>$n(Na_2S) = \frac{m(Na_2S)}{M(Na_2S)} = \frac{0,016m}{78}$ моль</p><p><strong>5.</strong> Определим, какой из реагентов находится в недостатке. Для этого сравним полученные количества веществ. Поскольку стехиометрические коэффициенты в уравнении реакции равны 1, реагент с меньшим количеством вещества будет в недостатке.</p><p>Сравним дроби $\frac{0,016}{159,5}$ и $\frac{0,016}{78}$. Так как $159,5 > 78$, то $\frac{1}{159,5} < \frac{1}{78}$.</p><p>Следовательно, $n(CuSO_4) < n(Na_2S)$. Сульфат меди(II) является лимитирующим реагентом, и расчеты будем вести по нему. Сульфид натрия находится в избытке.</p><p><strong>6.</strong> Рассчитаем массы продуктов реакции и оставшегося реагента.</p><p>По уравнению реакции, из $n(CuSO_4)$ моль сульфата меди(II) образуется столько же моль сульфида меди(II) и сульфата натрия, и столько же моль сульфида натрия вступает в реакцию:</p><p>$n(CuS)_{обр.} = n(Na_2SO_4)_{обр.} = n(Na_2S)_{реаг.} = n(CuSO_4) = \frac{0,016m}{159,5}$ моль</p><p>Масса образовавшегося осадка $CuS$:</p><p>$m(CuS) = n(CuS)_{обр.} \cdot M(CuS) = \frac{0,016m}{159,5} \cdot 95,5 = \frac{1,528m}{159,5}$ г</p><p>Масса образовавшегося сульфата натрия $Na_2SO_4$, который останется в растворе:</p><p>$m(Na_2SO_4) = n(Na_2SO_4)_{обр.} \cdot M(Na_2SO_4) = \frac{0,016m}{159,5} \cdot 142 = \frac{2,272m}{159,5}$ г</p><p>Масса избыточного сульфида натрия $Na_2S$, который останется в растворе:</p><p>$m(Na_2S)_{ост.} = m(Na_2S)_{исх.} - m(Na_2S)_{реаг.} = 0,016m - n(Na_2S)_{реаг.} \cdot M(Na_2S)$</p><p>$m(Na_2S)_{ост.} = 0,016m - \frac{0,016m}{159,5} \cdot 78 = 0,016m - \frac{1,248m}{159,5} = m(0,016 - \frac{1,248}{159,5}) = m(\frac{2,552 - 1,248}{159,5}) = \frac{1,304m}{159,5}$ г</p><p><strong>7.</strong> Рассчитаем массу конечного раствора. Она равна сумме масс исходных растворов за вычетом массы выпавшего осадка:</p><p>$m_{р-ра(конечн)} = m_{р-ра}(CuSO_4) + m_{р-ра}(Na_2S) - m(CuS) = m + m - \frac{1,528m}{159,5} = 2m - \frac{1,528m}{159,5}$</p><p>$m_{р-ра(конечн)} = m(2 - \frac{1,528}{159,5}) = m(\frac{319 - 1,528}{159,5}) = \frac{317,472m}{159,5}$ г</p><p><strong>8.</strong> Найдем массовые доли растворенных веществ в конечном растворе.</p><p>Массовая доля сульфата натрия $Na_2SO_4$:</p><p>$w(Na_2SO_4) = \frac{m(Na_2SO_4)}{m_{р-ра(конечн)}} = \frac{\frac{2,272m}{159,5}}{\frac{317,472m}{159,5}} = \frac{2,272}{317,472} \approx 0,007156$</p><p>В процентах: $0,007156 \cdot 100\% \approx 0,716\%$</p><p>Массовая доля оставшегося сульфида натрия $Na_2S$:</p><p>$w(Na_2S) = \frac{m(Na_2S)_{ост.}}{m_{р-ра(конечн)}} = \frac{\frac{1,304m}{159,5}}{\frac{317,472m}{159,5}} = \frac{1,304}{317,472} \approx 0,004107$</p><p>В процентах: $0,004107 \cdot 100\% \approx 0,411\%$</p><p><strong>Ответ:</strong> массовая доля сульфата натрия ($Na_2SO_4$) в конечном растворе составляет примерно $0,716\%$, а массовая доля сульфида натрия ($Na_2S$) - примерно $0,411\%$.</p>" ] #original: array:6 [ "id" => 1515290 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1087} "task" => array:2 [ "refs" => "662883" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>$w(CuSO_4) = 1,6\% = 0,016$</p><p>$w(Na_2S) = 1,6\% = 0,016$</p><p>$m_{р-ра}(CuSO_4) = m_{р-ра}(Na_2S)$</p><p><strong>Найти:</strong></p><p>$w_{конечн}(Na_2SO_4) - ?$</p><p>$w_{конечн}(Na_2S) - ?$</p><p><strong>Решение:</strong></p><p><strong>1.</strong> Запишем уравнение реакции между сульфатом меди(II) и сульфидом натрия:</p><p>$CuSO_4 + Na_2S \rightarrow CuS \downarrow + Na_2SO_4$</p><p>В результате реакции образуется нерастворимый осадок сульфида меди(II) ($CuS$) и растворимый сульфат натрия ($Na_2SO_4$).</p><p><strong>2.</strong> Поскольку массы исходных растворов равны, примем массу каждого раствора за $m$ г. Тогда массы растворенных веществ равны:</p><p>$m(CuSO_4) = m_{р-ра}(CuSO_4) \cdot w(CuSO_4) = m \cdot 0,016 = 0,016m$ г</p><p>$m(Na_2S) = m_{р-ра}(Na_2S) \cdot w(Na_2S) = m \cdot 0,016 = 0,016m$ г</p><p><strong>3.</strong> Рассчитаем молярные массы веществ:</p><p>$M(CuSO_4) = 63,5 + 32 + 4 \cdot 16 = 159,5$ г/моль</p><p>$M(Na_2S) = 2 \cdot 23 + 32 = 78$ г/моль</p><p>$M(CuS) = 63,5 + 32 = 95,5$ г/моль</p><p>$M(Na_2SO_4) = 2 \cdot 23 + 32 + 4 \cdot 16 = 142$ г/моль</p><p><strong>4.</strong> Найдем количество вещества (моль) каждого из реагентов:</p><p>$n(CuSO_4) = \frac{m(CuSO_4)}{M(CuSO_4)} = \frac{0,016m}{159,5}$ моль</p><p>$n(Na_2S) = \frac{m(Na_2S)}{M(Na_2S)} = \frac{0,016m}{78}$ моль</p><p><strong>5.</strong> Определим, какой из реагентов находится в недостатке. Для этого сравним полученные количества веществ. Поскольку стехиометрические коэффициенты в уравнении реакции равны 1, реагент с меньшим количеством вещества будет в недостатке.</p><p>Сравним дроби $\frac{0,016}{159,5}$ и $\frac{0,016}{78}$. Так как $159,5 > 78$, то $\frac{1}{159,5} < \frac{1}{78}$.</p><p>Следовательно, $n(CuSO_4) < n(Na_2S)$. Сульфат меди(II) является лимитирующим реагентом, и расчеты будем вести по нему. Сульфид натрия находится в избытке.</p><p><strong>6.</strong> Рассчитаем массы продуктов реакции и оставшегося реагента.</p><p>По уравнению реакции, из $n(CuSO_4)$ моль сульфата меди(II) образуется столько же моль сульфида меди(II) и сульфата натрия, и столько же моль сульфида натрия вступает в реакцию:</p><p>$n(CuS)_{обр.} = n(Na_2SO_4)_{обр.} = n(Na_2S)_{реаг.} = n(CuSO_4) = \frac{0,016m}{159,5}$ моль</p><p>Масса образовавшегося осадка $CuS$:</p><p>$m(CuS) = n(CuS)_{обр.} \cdot M(CuS) = \frac{0,016m}{159,5} \cdot 95,5 = \frac{1,528m}{159,5}$ г</p><p>Масса образовавшегося сульфата натрия $Na_2SO_4$, который останется в растворе:</p><p>$m(Na_2SO_4) = n(Na_2SO_4)_{обр.} \cdot M(Na_2SO_4) = \frac{0,016m}{159,5} \cdot 142 = \frac{2,272m}{159,5}$ г</p><p>Масса избыточного сульфида натрия $Na_2S$, который останется в растворе:</p><p>$m(Na_2S)_{ост.} = m(Na_2S)_{исх.} - m(Na_2S)_{реаг.} = 0,016m - n(Na_2S)_{реаг.} \cdot M(Na_2S)$</p><p>$m(Na_2S)_{ост.} = 0,016m - \frac{0,016m}{159,5} \cdot 78 = 0,016m - \frac{1,248m}{159,5} = m(0,016 - \frac{1,248}{159,5}) = m(\frac{2,552 - 1,248}{159,5}) = \frac{1,304m}{159,5}$ г</p><p><strong>7.</strong> Рассчитаем массу конечного раствора. Она равна сумме масс исходных растворов за вычетом массы выпавшего осадка:</p><p>$m_{р-ра(конечн)} = m_{р-ра}(CuSO_4) + m_{р-ра}(Na_2S) - m(CuS) = m + m - \frac{1,528m}{159,5} = 2m - \frac{1,528m}{159,5}$</p><p>$m_{р-ра(конечн)} = m(2 - \frac{1,528}{159,5}) = m(\frac{319 - 1,528}{159,5}) = \frac{317,472m}{159,5}$ г</p><p><strong>8.</strong> Найдем массовые доли растворенных веществ в конечном растворе.</p><p>Массовая доля сульфата натрия $Na_2SO_4$:</p><p>$w(Na_2SO_4) = \frac{m(Na_2SO_4)}{m_{р-ра(конечн)}} = \frac{\frac{2,272m}{159,5}}{\frac{317,472m}{159,5}} = \frac{2,272}{317,472} \approx 0,007156$</p><p>В процентах: $0,007156 \cdot 100\% \approx 0,716\%$</p><p>Массовая доля оставшегося сульфида натрия $Na_2S$:</p><p>$w(Na_2S) = \frac{m(Na_2S)_{ост.}}{m_{р-ра(конечн)}} = \frac{\frac{1,304m}{159,5}}{\frac{317,472m}{159,5}} = \frac{1,304}{317,472} \approx 0,004107$</p><p>В процентах: $0,004107 \cdot 100\% \approx 0,411\%$</p><p><strong>Ответ:</strong> массовая доля сульфата натрия ($Na_2SO_4$) в конечном растворе составляет примерно $0,716\%$, а массовая доля сульфида натрия ($Na_2S$) - примерно $0,411\%$.</p>" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "662884" "type" => "task" ] "previous" => array:2 [ "refs" => "662882" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1114 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "page" => Illuminate\Database\Eloquent\Collection {#1117 #items: array:1 [ 0 => App\Models\BookPage {#1042 #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:21 [ "id" => 925964 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "68" "field_url" => "/10-klass/himiya/eremin-uchebnik/page-68" "field_display_title" => "68" "field_folder" => "1" "field_image_name" => "68" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1040 #items: [] #escapeWhenCastingToString: false } "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1089 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1085 #items: [] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1125 #items: array:1 [ 0 => App\Models\Element {#1122 #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" => 1100357 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1123 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #original: array:6 [ "id" => 1100357 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1123 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "925965" "type" => "book_page" ] "previous" => array:2 [ "refs" => "925963" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1213 #items: array:7 [ 0 => App\Models\Task {#1227 #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" => 662883 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "68" "field_page_end" => null "field_url" => "/10-klass/himiya/eremin-uchebnik/09-9" "field_display_title" => "9" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1228 …2} "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" => 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№9 (с. 68)
Условие. №9 (с. 68)
скриншот условия
9. Смешали равные по массе порции 1,6%-х растворов сульфата меди(II) и сульфида натрия. Определите массовые доли растворённых веществ в растворе, полученном после отделения выпавшего осадка.
Решение. №9 (с. 68)
Решение 2. №9 (с. 68)
Дано:
$w(CuSO_4) = 1,6\% = 0,016$
$w(Na_2S) = 1,6\% = 0,016$
$m_{р-ра}(CuSO_4) = m_{р-ра}(Na_2S)$
Найти:
$w_{конечн}(Na_2SO_4) - ?$
$w_{конечн}(Na_2S) - ?$
Решение:
1. Запишем уравнение реакции между сульфатом меди(II) и сульфидом натрия:
$CuSO_4 + Na_2S \rightarrow CuS \downarrow + Na_2SO_4$
В результате реакции образуется нерастворимый осадок сульфида меди(II) ($CuS$) и растворимый сульфат натрия ($Na_2SO_4$).
2. Поскольку массы исходных растворов равны, примем массу каждого раствора за $m$ г. Тогда массы растворенных веществ равны:
$m(CuSO_4) = m_{р-ра}(CuSO_4) \cdot w(CuSO_4) = m \cdot 0,016 = 0,016m$ г
$m(Na_2S) = m_{р-ра}(Na_2S) \cdot w(Na_2S) = m \cdot 0,016 = 0,016m$ г
3. Рассчитаем молярные массы веществ:
$M(CuSO_4) = 63,5 + 32 + 4 \cdot 16 = 159,5$ г/моль
$M(Na_2S) = 2 \cdot 23 + 32 = 78$ г/моль
$M(CuS) = 63,5 + 32 = 95,5$ г/моль
$M(Na_2SO_4) = 2 \cdot 23 + 32 + 4 \cdot 16 = 142$ г/моль
4. Найдем количество вещества (моль) каждого из реагентов:
$n(CuSO_4) = \frac{m(CuSO_4)}{M(CuSO_4)} = \frac{0,016m}{159,5}$ моль
$n(Na_2S) = \frac{m(Na_2S)}{M(Na_2S)} = \frac{0,016m}{78}$ моль
5. Определим, какой из реагентов находится в недостатке. Для этого сравним полученные количества веществ. Поскольку стехиометрические коэффициенты в уравнении реакции равны 1, реагент с меньшим количеством вещества будет в недостатке.
Сравним дроби $\frac{0,016}{159,5}$ и $\frac{0,016}{78}$. Так как $159,5 > 78$, то $\frac{1}{159,5} < \frac{1}{78}$.
Следовательно, $n(CuSO_4) < n(Na_2S)$. Сульфат меди(II) является лимитирующим реагентом, и расчеты будем вести по нему. Сульфид натрия находится в избытке.
6. Рассчитаем массы продуктов реакции и оставшегося реагента.
По уравнению реакции, из $n(CuSO_4)$ моль сульфата меди(II) образуется столько же моль сульфида меди(II) и сульфата натрия, и столько же моль сульфида натрия вступает в реакцию:
$n(CuS)_{обр.} = n(Na_2SO_4)_{обр.} = n(Na_2S)_{реаг.} = n(CuSO_4) = \frac{0,016m}{159,5}$ моль
Масса образовавшегося осадка $CuS$:
$m(CuS) = n(CuS)_{обр.} \cdot M(CuS) = \frac{0,016m}{159,5} \cdot 95,5 = \frac{1,528m}{159,5}$ г
Масса образовавшегося сульфата натрия $Na_2SO_4$, который останется в растворе:
$m(Na_2SO_4) = n(Na_2SO_4)_{обр.} \cdot M(Na_2SO_4) = \frac{0,016m}{159,5} \cdot 142 = \frac{2,272m}{159,5}$ г
Масса избыточного сульфида натрия $Na_2S$, который останется в растворе:
$m(Na_2S)_{ост.} = m(Na_2S)_{исх.} - m(Na_2S)_{реаг.} = 0,016m - n(Na_2S)_{реаг.} \cdot M(Na_2S)$
$m(Na_2S)_{ост.} = 0,016m - \frac{0,016m}{159,5} \cdot 78 = 0,016m - \frac{1,248m}{159,5} = m(0,016 - \frac{1,248}{159,5}) = m(\frac{2,552 - 1,248}{159,5}) = \frac{1,304m}{159,5}$ г
7. Рассчитаем массу конечного раствора. Она равна сумме масс исходных растворов за вычетом массы выпавшего осадка:
$m_{р-ра(конечн)} = m_{р-ра}(CuSO_4) + m_{р-ра}(Na_2S) - m(CuS) = m + m - \frac{1,528m}{159,5} = 2m - \frac{1,528m}{159,5}$
$m_{р-ра(конечн)} = m(2 - \frac{1,528}{159,5}) = m(\frac{319 - 1,528}{159,5}) = \frac{317,472m}{159,5}$ г
8. Найдем массовые доли растворенных веществ в конечном растворе.
Массовая доля сульфата натрия $Na_2SO_4$:
$w(Na_2SO_4) = \frac{m(Na_2SO_4)}{m_{р-ра(конечн)}} = \frac{\frac{2,272m}{159,5}}{\frac{317,472m}{159,5}} = \frac{2,272}{317,472} \approx 0,007156$
В процентах: $0,007156 \cdot 100\% \approx 0,716\%$
Массовая доля оставшегося сульфида натрия $Na_2S$:
$w(Na_2S) = \frac{m(Na_2S)_{ост.}}{m_{р-ра(конечн)}} = \frac{\frac{1,304m}{159,5}}{\frac{317,472m}{159,5}} = \frac{1,304}{317,472} \approx 0,004107$
В процентах: $0,004107 \cdot 100\% \approx 0,411\%$
Ответ: массовая доля сульфата натрия ($Na_2SO_4$) в конечном растворе составляет примерно $0,716\%$, а массовая доля сульфида натрия ($Na_2S$) - примерно $0,411\%$.
Другие задания:
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