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Автор - wasabi1337

Помогите пожалуйста решить​

Ответ

Автор - Mesolga

Ответ:

2 Al + 3 CuO → Al2O3 + 3 Cu

3 PbO2 + 4 Al→ 2 Al2O3 + 3 Pb

2 H2S + O2 → 2 H2O + 2 S

3 Ba + 4 H2SO4 → 3 BaSO4 + S + 4 H2O

Cr2O3 + 3 Mg→3 MgO + 2 Cr

4 Mg + 5 H2SO4 → 4 MgSO4 + 4 H2O + H2S

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