Объяснение:
H2 + Cl2 = 2HCl
Fe + CuSO4 = FeSO4 + Cu↓
2H2O = 2H2↑ + O2↑
Mg + H2O = MgO + H2↑
CuO + H2 = Cu↓ + H2O
ZnO + 2HCl = ZnCl2 + H2O
2Ca + O2 = 2CaO
Na2SO4 + BaCl2 = BaSO4↓ + 2NaCl
