Предмет: Химия, автор: Djdjdjdjdjje

Помогите выполнить:
Выберите правильный ответ.
1. Формулы только оксидов приведены в ряду: 1) H2SO4, СаО, CuCl2 ; 2) Na2CO3, Na2O, N2O5 ; 3) Р2О5, BaO, SO3; 4) NaOH, Na2O, Cu(OH)2.
2. Формулы только основных оксидов приведены в ряду: 1) СО2, СаО, СuО ; 2) СО2, Na2O, N2O5; 3) Р2О5, BaO, SO3 ; 4) СаО, Na2O, CuO .
3. Формулы только кислотных оксидов приведены в ряду: 1) СО2, SO2, SO3; 2) СО2, Na2O, N2O5; 3) Р2О5, BaO, SO3 ; 4) CaO, Na2O, CuO .
4. Из приведенных формул веществ выпишите только те, которыми обозначены оксиды: NaCl, Na2O, НСl, Сl2О7, Са3(РО4)2, CaO, Р2О5, Н2О, Н3РО4
5. Установите соответствие между названием оксида и его формулой:
1) оксид натрия Б. SO3
2) оксид серы(IV) B. Na2O
3) оксид железа(III) Г. Р2О5
4) оксид фосфора(V) Д. Fe2O3 ​

Ответы

Автор ответа: savakilivjil
4

Ответ:1. 2). 2. 4) 3. 1) 4.Na2O, Cl2O7,

CaO, P2O5, H2O.

5. 1-В, 2-Б, 3-Д, 4-Г

Объяснение:


Djdjdjdjdjje: Спасибо!
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