Закончите уравнения реакций металлов со сложными веществами
Fe+?--Fe3O4+H2
Al+?--Al(OH)3+H2
Ca+?--Ca(OH)2+H2
Al+?--Fe+Al2O3
Fe+?--FeCl2+H2
Zn+?--ZnSO4+H2
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