Предмет: Химия, автор: ukristina2008

ПОМОГИТЕ СРОЧНО! это химия 7 класс

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Ответы

Автор ответа: ciyciyciy

1

1 вариант:

1. 2NaNO3 → 2NaNO2 + O2

2. 2Fe(OH)3=Fe2O3 + 3H2O

3. 2BAO2=2BAO + O2

4. 2KCLO3=2KCL + 3O2

5. 2HgO=2Hg + O2

2 вариант:

1. 2H2O=2H2 + O2

2. 2H2O2=2H2O + O2

3. 2Ag2O=4Ag + O2

4. 2KMnO4=K2MnO4 + MnO2 + O2

5. 2Cr(OH)3=Cr2O3 + 3H2O

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