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Номер 4, страница 137 - гдз по химии 9 класс учебник Рудзитис, Фельдман
Авторы: Рудзитис Г. Е., Фельдман Ф. Г.
Тип: Учебник
Издательство: Просвещение
Год издания: 2019 - 2023
Цвет обложки: зелёный
ISBN: 978-5-09-113569-5
Допущено Министерством просвещения Российской Федерации
Популярные ГДЗ в 9 классе
Глава 6. Углерод и кремний. Параграф 38. Кремниевая кислота и её соли. Стекло. Цемент. Подумай, ответь, выполни... - номер 4, страница 137.
App\Models\Task {#1003 // 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" => 651204 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_page_start" => "137" "field_page_end" => null "field_url" => "/9-klass/himiya/rudzitis-uchebnik/38-2-4" "field_display_title" => "4" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1009 #items: array:1 [ 0 => App\Models\Term {#1008 #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 00:54:11" "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 00:54:11" "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 {#1007 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1018 #items: array:1 [ 0 => App\Models\Branch {#1017 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:23 [ "id" => 650811 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Углерод и кремний" "field_branch_order" => "6" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1022 #items: array:1 [ 0 => App\Models\Term {#1019 #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 00:54:11" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ "field_accusative_case" => "Главу" "field_creative_case" => "Главой" "field_dative_case" => "Главе" "field_genitive_case" => "Главы" "field_nominative_case" => "Глава" "field_prepositional_case" => "Главе" ] "field_page_check_not_needed" => null "field_short_name" => null ] #original: array:7 [ "id" => 29 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ "field_accusative_case" => "Главу" "field_creative_case" => "Главой" "field_dative_case" => "Главе" "field_genitive_case" => "Главы" "field_nominative_case" => "Глава" "field_prepositional_case" => "Главе" ] "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" => "111" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1053 #items: array:1 [ 0 => App\Models\Book {#1021 #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" => 218 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1023 #items: array:1 [ 0 => App\Models\Term {#1020 #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 00:54:11" "updated_at" => null "name" => "Химия" "field_abbreviated_name" => null "field_cases" => array:6 [ "field_accusative_case" => "химию" "field_creative_case" => "химией" "field_dative_case" => "химии" "field_genitive_case" => "химии" "field_nominative_case" => "химия" "field_prepositional_case" => "химии" ] "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 00:54:11" "updated_at" => null "name" => "Химия" "field_abbreviated_name" => null "field_cases" => array:6 [ "field_accusative_case" => "химию" "field_creative_case" => "химией" "field_dative_case" => "химии" "field_genitive_case" => "химии" "field_nominative_case" => "химия" "field_prepositional_case" => "химии" ] "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 {#1024 #items: array:1 [ 0 => App\Models\Term {#1025 #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" => 5458 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "9" "field_cases" => array:6 [ "field_accusative_case" => "девятый" "field_creative_case" => "девятым" "field_dative_case" => "девятому" "field_genitive_case" => "девятого" "field_nominative_case" => "девятый" "field_prepositional_case" => "девятом" ] "field_translit" => "devjatyj" ] #original: array:6 [ "id" => 5458 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "9" "field_cases" => array:6 [ "field_accusative_case" => "девятый" "field_creative_case" => "девятым" "field_dative_case" => "девятому" "field_genitive_case" => "девятого" "field_nominative_case" => "девятый" "field_prepositional_case" => "девятом" ] "field_translit" => "devjatyj" ] #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 {#1026 #items: array:1 [ 0 => App\Models\Term {#1027 #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 00:54:11" "updated_at" => null "name" => "Просвещение" "field_cases" => null "field_translit" => "prosveschenie" ] #original: array:6 [ "id" => 5153 "created_at" => "2026-04-10 00:54:11" "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 {#1028 #items: array:2 [ 0 => App\Models\Term {#1029 #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" => 5630 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Рудзитис" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Гунтис" "field_patronymic" => "Екабович" "field_surname_rp" => null ] #original: array:12 [ "id" => 5630 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Рудзитис" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Гунтис" "field_patronymic" => "Екабович" "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 {#1030 #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" => 6052 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Фельдман" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Фриц" "field_patronymic" => "Генрихович" "field_surname_rp" => null ] #original: array:12 [ "id" => 6052 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Фельдман" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Фриц" "field_patronymic" => "Генрихович" "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 => "*" ] } ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1031 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1032 #items: array:1 [ 0 => App\Models\Term {#1033 #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 00:54:11" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ "field_accusative_case" => "учебник" "field_creative_case" => "учебником" "field_dative_case" => "учебнику" "field_genitive_case" => "учебника" "field_nominative_case" => "учебник" "field_prepositional_case" => "учебнике" ] "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 00:54:11" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ "field_accusative_case" => "учебник" "field_creative_case" => "учебником" "field_dative_case" => "учебнику" "field_genitive_case" => "учебника" "field_nominative_case" => "учебник" "field_prepositional_case" => "учебнике" ] "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 {#1034 #items: array:1 [ 0 => App\Models\Term {#1035 #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 00:54:11" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "field_translit" => "rossiya" ] #original: array:6 [ "id" => 9 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "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 {#1036 #items: array:1 [ 0 => App\Models\Term {#1037 #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 00:54:11" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "field_translit" => "moskva" ] #original: array:6 [ "id" => 15 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "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 {#1038 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1039 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1040 #items: [] #escapeWhenCastingToString: false } "field_standart_of_education" => 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: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6706 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "ФГОС (старый)" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "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 00:54:11" "updated_at" => null "name" => "ФГОС (старый)" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "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" => "9" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1043 #items: array:1 [ 0 => App\Models\Term {#1044 #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 00:54:11" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "field_translit" => "stereotipnoe" ] #original: array:6 [ "id" => 33 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "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 {#1045 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => null "field_publication_year" => "2019" "field_publication_year_until" => "2023" "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" => "447" "field_priority" => "16" "field_default_folder" => "/himiya_09/rudzitis-u22/" "field_isbn" => "978-5-09-113569-5" "field_cover" => array:1 [ 0 => "/media/himiya_09/rudzitis-u22/covers/cover1.webp" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/himiya_09/rudzitis-u22/covers/cover1.webp" "alt" => "" "width" => "699" "height" => "933" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1046 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1047 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1048 #items: [] #escapeWhenCastingToString: false } "field_url" => "/9-klass/himiya/rudzitis-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1049 #items: array:1 [ 0 => App\Models\Term {#1050 #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 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Программа обучения становится в разы сложнее и объемнее. Кроме того, полным ходом идет подготовка к экзаменам. Не все школьники справляются с такими нагрузками. Многие, пытаясь сосредоточиться на нескольких задачах сразу, допускают повсюду промахи. Особенно сложно нагнать потом упущенные навыки по химии, так как эта наука весьма специфична. Поэтому лучше сразу предотвратить всякие недоразумения. Для этого достаточно воспользоваться справочником <strong>ГДЗ по Химии 9 класс Учебник Рудзитис, Фельдман (Просвещение, 2016 г.)</strong>. </p> <p> На девятом году обучения ученикам предстоит учить такие темы как: </p> <ol> <li>Окислительно-восстановительные реакции.</li> <li>Характеристика кислорода и серы.</li> <li>Сероводород. Сульфиды.</li> <li>Соли аммония.</li> <li>Фосфорная кислота и её соли.</li> <li>Химические свойства углерода. 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Справочник стоит использовать только для самоконтроля и работы над ошибками. </p>" "breadcrumbs" => array:3 [ "class" => 380 "subject" => 558 "class_subject" => 499 ] ] #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 {#1051 #items: [] #escapeWhenCastingToString: false } ] #original: array:23 [ "id" => 650811 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Углерод и кремний" "field_branch_order" => "6" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1022} "field_page_start" => "111" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1053} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1051} ] #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 {#1082 #items: array:3 [ 0 => App\Models\Branch {#1092 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:23 [ "id" => 650811 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Углерод и кремний" "field_branch_order" => "6" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1093 #items: array:1 [ 0 => App\Models\Term {#1019} ] #escapeWhenCastingToString: false } "field_page_start" => "111" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1094 #items: array:1 [ 0 => App\Models\Book {#1021} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1095 #items: [] #escapeWhenCastingToString: false } ] #original: array:23 [ "id" => 650811 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Углерод и кремний" "field_branch_order" => "6" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1093} "field_page_start" => "111" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1094} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1095} ] #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 {#1096 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:23 [ "id" => 650835 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Кремниевая кислота и её соли. Стекло. Цемент" "field_branch_order" => "38" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1100 #items: array:1 [ 0 => App\Models\Term {#1097 #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 00:54:11" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ "field_accusative_case" => "Параграф" "field_creative_case" => "Параграфом" "field_dative_case" => "Параграфу" "field_genitive_case" => "Параграфа" "field_nominative_case" => "Параграф" "field_prepositional_case" => "Параграфе" ] "field_page_check_not_needed" => null "field_short_name" => "§" ] #original: array:7 [ "id" => 32 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ "field_accusative_case" => "Параграф" "field_creative_case" => "Параграфом" "field_dative_case" => "Параграфу" "field_genitive_case" => "Параграфа" "field_nominative_case" => "Параграф" "field_prepositional_case" => "Параграфе" ] "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" => "135" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1099 #items: array:1 [ 0 => App\Models\Book {#1021} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1098 #items: array:1 [ 0 => App\Models\Branch {#1017} ] #escapeWhenCastingToString: false } ] #original: array:23 [ "id" => 650835 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Кремниевая кислота и её соли. Стекло. Цемент" "field_branch_order" => "38" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1100} "field_page_start" => "135" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1099} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1098} ] #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\Branch {#1101 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:23 [ "id" => 650837 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Подумай, ответь, выполни..." "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1102 #items: [] #escapeWhenCastingToString: false } "field_page_start" => "137" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1103 #items: array:1 [ 0 => App\Models\Book {#1021} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1112 #items: array:1 [ 0 => App\Models\Branch {#1111 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:23 [ "id" => 650835 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Кремниевая кислота и её соли. Стекло. Цемент" "field_branch_order" => "38" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1113 #items: array:1 [ …1] #escapeWhenCastingToString: false } "field_page_start" => "135" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1114 #items: array:1 [ …1] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1115 #items: array:1 [ …1] #escapeWhenCastingToString: false } ] #original: array:23 [ "id" => 650835 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Кремниевая кислота и её соли. Стекло. Цемент" "field_branch_order" => "38" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1113} "field_page_start" => "135" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1114} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1115} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } ] #original: array:23 [ "id" => 650837 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "field_display_title" => "Подумай, ответь, выполни..." "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1102} "field_page_start" => "137" "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" => [] "book" => Illuminate\Database\Eloquent\Collection {#1103} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1112} ] #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 {#1080 #items: array:3 [ 0 => App\Models\Element {#1072 #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" => 806816 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1063 #items: array:1 [ 0 => App\Models\Edition {#1073 #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" => 1790 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1071 #items: array:1 [ …1] #escapeWhenCastingToString: false } "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" => "pasha" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1069 #items: [] #escapeWhenCastingToString: false } "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1068 #items: [] #escapeWhenCastingToString: false } "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1067 #items: [] #escapeWhenCastingToString: false } "field_content_source" => null ] #original: array:21 [ "id" => 1790 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1071} "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" => "pasha" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1069} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1068} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1067} "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" => "651204" "type" => "task" ] "text" => "<p><strong>4.</strong> Сколько потребуется оксида кремния(IV), содержащего 0,2 массовой доли примесей, чтобы получить 6,1 кг силиката натрия?</p>" "img" => array:1 [ 0 => array:5 [ "name" => "4-1.jpg" "alt" => null "width" => "1594" "height" => 171 "path" => "/media/himiya_09/rudzitis-u22/0-38-2/4-1.webp?ts=1738739148" ] ] ] #original: array:7 [ "id" => 806816 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1063} "task" => array:2 [ "refs" => "651204" "type" => "task" ] "text" => "<p><strong>4.</strong> Сколько потребуется оксида кремния(IV), содержащего 0,2 массовой доли примесей, чтобы получить 6,1 кг силиката натрия?</p>" "img" => array:1 [ 0 => array:5 [ "name" => "4-1.jpg" "alt" => null "width" => "1594" "height" => 171 "path" => "/media/himiya_09/rudzitis-u22/0-38-2/4-1.webp?ts=1738739148" ] ] ] #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 {#1065 #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" => 806930 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1055 #items: array:1 [ 0 => App\Models\Edition {#1066 #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" => 1791 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Решение" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1061 #items: array:1 [ …1] #escapeWhenCastingToString: false } "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" => "pasha" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1062 #items: [] #escapeWhenCastingToString: false } "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1060 #items: [] #escapeWhenCastingToString: false } "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1057 #items: [] #escapeWhenCastingToString: false } "field_content_source" => null ] #original: array:21 [ "id" => 1791 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Решение" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1061} "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" => "pasha" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1062} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1060} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1057} "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" => "651204" "type" => "task" ] "img" => array:2 [ 0 => array:5 [ "name" => "4-1.jpg" "alt" => null "width" => "2050" "height" => 1420 "path" => "/media/himiya_09/rudzitis-u22/1-38-2/4-1.webp?ts=1738739205" ] 1 => array:5 [ "name" => "4-2.jpg" "alt" => null "width" => "1722" "height" => 395 "path" => "/media/himiya_09/rudzitis-u22/1-38-2/4-2.webp?ts=1738739205" ] ] ] #original: array:6 [ "id" => 806930 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1055} "task" => array:2 [ "refs" => "651204" "type" => "task" ] "img" => array:2 [ 0 => array:5 [ "name" => "4-1.jpg" "alt" => null "width" => "2050" "height" => 1420 "path" => "/media/himiya_09/rudzitis-u22/1-38-2/4-1.webp?ts=1738739205" ] 1 => array:5 [ "name" => "4-2.jpg" "alt" => null "width" => "1722" "height" => 395 "path" => "/media/himiya_09/rudzitis-u22/1-38-2/4-2.webp?ts=1738739205" ] ] ] #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 {#1059 #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" => 1494431 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1083 #items: array:1 [ 0 => App\Models\Edition {#1058 #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" => 5461 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1052 #items: array:1 [ …1] #escapeWhenCastingToString: false } "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 {#1054 #items: [] #escapeWhenCastingToString: false } "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1015 #items: [] #escapeWhenCastingToString: false } "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1013 #items: [] #escapeWhenCastingToString: false } "field_content_source" => null ] #original: array:21 [ "id" => 5461 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1052} "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 {#1054} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1015} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1013} "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" => "651204" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>$m(Na_2SiO_3) = 6,1 \text{ кг}$</p><p>$\omega(\text{примесей в } SiO_2) = 0,2$</p><p><strong>Найти:</strong></p><p>$m(\text{техн. } SiO_2) - ?$</p><p><strong>Решение:</strong></p><p>Для решения задачи необходимо выполнить следующие шаги:</p><p><strong>1.</strong> Составить уравнение химической реакции получения силиката натрия. Силикат натрия можно получить при сплавлении оксида кремния(IV) с щелочью или карбонатом натрия. Запишем уравнение реакции с карбонатом натрия:</p><p>$SiO_2 + Na_2CO_3 \xrightarrow{t} Na_2SiO_3 + CO_2\uparrow$</p><p><strong>2.</strong> Рассчитать молярные массы оксида кремния(IV) и силиката натрия. Используем относительные атомные массы элементов, округленные до целых значений: $Ar(Na) = 23$, $Ar(Si) = 28$, $Ar(O) = 16$.</p><p>Молярная масса оксида кремния(IV) ($SiO_2$):</p><p>$M(SiO_2) = Ar(Si) + 2 \cdot Ar(O) = 28 + 2 \cdot 16 = 60 \text{ г/моль} = 0,06 \text{ кг/моль}$</p><p>Молярная масса силиката натрия ($Na_2SiO_3$):</p><p>$M(Na_2SiO_3) = 2 \cdot Ar(Na) + Ar(Si) + 3 \cdot Ar(O) = 2 \cdot 23 + 28 + 3 \cdot 16 = 46 + 28 + 48 = 122 \text{ г/моль} = 0,122 \text{ кг/моль}$</p><p><strong>3.</strong> Найти количество вещества (число моль) полученного силиката натрия по формуле $\nu = m/M$:</p><p>$\nu(Na_2SiO_3) = \frac{m(Na_2SiO_3)}{M(Na_2SiO_3)} = \frac{6,1 \text{ кг}}{0,122 \text{ кг/моль}} = 50 \text{ моль}$</p><p><strong>4.</strong> По уравнению реакции определить количество вещества оксида кремния(IV), вступившего в реакцию. Согласно стехиометрическим коэффициентам в уравнении, соотношение количеств веществ $SiO_2$ и $Na_2SiO_3$ равно 1:1.</p><p>$\nu(SiO_2) = \nu(Na_2SiO_3) = 50 \text{ моль}$</p><p><strong>5.</strong> Вычислить массу чистого оксида кремния(IV), которая потребовалась для реакции:</p><p>$m(\text{чист. } SiO_2) = \nu(SiO_2) \cdot M(SiO_2) = 50 \text{ моль} \cdot 0,06 \text{ кг/моль} = 3,0 \text{ кг}$</p><p><strong>6.</strong> Исходный оксид кремния(IV) не является чистым, он содержит 0,2 массовой доли (или 20%) примесей. Найдем массовую долю чистого $SiO_2$ в техническом образце:</p><p>$\omega(\text{чист. } SiO_2) = 1 - \omega(\text{примесей}) = 1 - 0,2 = 0,8$</p><p><strong>7.</strong> Найти общую массу технического оксида кремния(IV), зная массу чистого вещества и его массовую долю:</p><p>$m(\text{техн. } SiO_2) = \frac{m(\text{чист. } SiO_2)}{\omega(\text{чист. } SiO_2)} = \frac{3,0 \text{ кг}}{0,8} = 3,75 \text{ кг}$</p><p><strong>Ответ:</strong> потребуется 3,75 кг оксида кремния(IV).</p>" ] #original: array:6 [ "id" => 1494431 "created_at" => "2026-04-10 00:54:11" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1083} "task" => array:2 [ "refs" => "651204" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>$m(Na_2SiO_3) = 6,1 \text{ кг}$</p><p>$\omega(\text{примесей в } SiO_2) = 0,2$</p><p><strong>Найти:</strong></p><p>$m(\text{техн. } SiO_2) - ?$</p><p><strong>Решение:</strong></p><p>Для решения задачи необходимо выполнить следующие шаги:</p><p><strong>1.</strong> Составить уравнение химической реакции получения силиката натрия. Силикат натрия можно получить при сплавлении оксида кремния(IV) с щелочью или карбонатом натрия. Запишем уравнение реакции с карбонатом натрия:</p><p>$SiO_2 + Na_2CO_3 \xrightarrow{t} Na_2SiO_3 + CO_2\uparrow$</p><p><strong>2.</strong> Рассчитать молярные массы оксида кремния(IV) и силиката натрия. Используем относительные атомные массы элементов, округленные до целых значений: $Ar(Na) = 23$, $Ar(Si) = 28$, $Ar(O) = 16$.</p><p>Молярная масса оксида кремния(IV) ($SiO_2$):</p><p>$M(SiO_2) = Ar(Si) + 2 \cdot Ar(O) = 28 + 2 \cdot 16 = 60 \text{ г/моль} = 0,06 \text{ кг/моль}$</p><p>Молярная масса силиката натрия ($Na_2SiO_3$):</p><p>$M(Na_2SiO_3) = 2 \cdot Ar(Na) + Ar(Si) + 3 \cdot Ar(O) = 2 \cdot 23 + 28 + 3 \cdot 16 = 46 + 28 + 48 = 122 \text{ г/моль} = 0,122 \text{ кг/моль}$</p><p><strong>3.</strong> Найти количество вещества (число моль) полученного силиката натрия по формуле $\nu = m/M$:</p><p>$\nu(Na_2SiO_3) = \frac{m(Na_2SiO_3)}{M(Na_2SiO_3)} = \frac{6,1 \text{ кг}}{0,122 \text{ кг/моль}} = 50 \text{ моль}$</p><p><strong>4.</strong> По уравнению реакции определить количество вещества оксида кремния(IV), вступившего в реакцию. Согласно стехиометрическим коэффициентам в уравнении, соотношение количеств веществ $SiO_2$ и $Na_2SiO_3$ равно 1:1.</p><p>$\nu(SiO_2) = \nu(Na_2SiO_3) = 50 \text{ моль}$</p><p><strong>5.</strong> Вычислить массу чистого оксида кремния(IV), которая потребовалась для реакции:</p><p>$m(\text{чист. } SiO_2) = \nu(SiO_2) \cdot M(SiO_2) = 50 \text{ моль} \cdot 0,06 \text{ кг/моль} = 3,0 \text{ кг}$</p><p><strong>6.</strong> Исходный оксид кремния(IV) не является чистым, он содержит 0,2 массовой доли (или 20%) примесей. Найдем массовую долю чистого $SiO_2$ в техническом образце:</p><p>$\omega(\text{чист. } SiO_2) = 1 - \omega(\text{примесей}) = 1 - 0,2 = 0,8$</p><p><strong>7.</strong> Найти общую массу технического оксида кремния(IV), зная массу чистого вещества и его массовую долю:</p><p>$m(\text{техн. } SiO_2) = \frac{m(\text{чист. } SiO_2)}{\omega(\text{чист. } SiO_2)} = \frac{3,0 \text{ кг}}{0,8} = 3,75 \text{ кг}$</p><p><strong>Ответ:</strong> потребуется 3,75 кг оксида кремния(IV).</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" => "651205" "type" => "task" ] "previous" => array:2 [ "refs" => "651203" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1076 #items: array:1 [ 0 => 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№4 (с. 137)
Условие. №4 (с. 137)
скриншот условия
4. Сколько потребуется оксида кремния(IV), содержащего 0,2 массовой доли примесей, чтобы получить 6,1 кг силиката натрия?
Решение. №4 (с. 137)
Решение 2. №4 (с. 137)
Дано:
$m(Na_2SiO_3) = 6,1 \text{ кг}$
$\omega(\text{примесей в } SiO_2) = 0,2$
Найти:
$m(\text{техн. } SiO_2) - ?$
Решение:
Для решения задачи необходимо выполнить следующие шаги:
1. Составить уравнение химической реакции получения силиката натрия. Силикат натрия можно получить при сплавлении оксида кремния(IV) с щелочью или карбонатом натрия. Запишем уравнение реакции с карбонатом натрия:
$SiO_2 + Na_2CO_3 \xrightarrow{t} Na_2SiO_3 + CO_2\uparrow$
2. Рассчитать молярные массы оксида кремния(IV) и силиката натрия. Используем относительные атомные массы элементов, округленные до целых значений: $Ar(Na) = 23$, $Ar(Si) = 28$, $Ar(O) = 16$.
Молярная масса оксида кремния(IV) ($SiO_2$):
$M(SiO_2) = Ar(Si) + 2 \cdot Ar(O) = 28 + 2 \cdot 16 = 60 \text{ г/моль} = 0,06 \text{ кг/моль}$
Молярная масса силиката натрия ($Na_2SiO_3$):
$M(Na_2SiO_3) = 2 \cdot Ar(Na) + Ar(Si) + 3 \cdot Ar(O) = 2 \cdot 23 + 28 + 3 \cdot 16 = 46 + 28 + 48 = 122 \text{ г/моль} = 0,122 \text{ кг/моль}$
3. Найти количество вещества (число моль) полученного силиката натрия по формуле $\nu = m/M$:
$\nu(Na_2SiO_3) = \frac{m(Na_2SiO_3)}{M(Na_2SiO_3)} = \frac{6,1 \text{ кг}}{0,122 \text{ кг/моль}} = 50 \text{ моль}$
4. По уравнению реакции определить количество вещества оксида кремния(IV), вступившего в реакцию. Согласно стехиометрическим коэффициентам в уравнении, соотношение количеств веществ $SiO_2$ и $Na_2SiO_3$ равно 1:1.
$\nu(SiO_2) = \nu(Na_2SiO_3) = 50 \text{ моль}$
5. Вычислить массу чистого оксида кремния(IV), которая потребовалась для реакции:
$m(\text{чист. } SiO_2) = \nu(SiO_2) \cdot M(SiO_2) = 50 \text{ моль} \cdot 0,06 \text{ кг/моль} = 3,0 \text{ кг}$
6. Исходный оксид кремния(IV) не является чистым, он содержит 0,2 массовой доли (или 20%) примесей. Найдем массовую долю чистого $SiO_2$ в техническом образце:
$\omega(\text{чист. } SiO_2) = 1 - \omega(\text{примесей}) = 1 - 0,2 = 0,8$
7. Найти общую массу технического оксида кремния(IV), зная массу чистого вещества и его массовую долю:
$m(\text{техн. } SiO_2) = \frac{m(\text{чист. } SiO_2)}{\omega(\text{чист. } SiO_2)} = \frac{3,0 \text{ кг}}{0,8} = 3,75 \text{ кг}$
Ответ: потребуется 3,75 кг оксида кремния(IV).
Другие задания:
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