1)2 Сu + O2 = 2CuO
CuO + 2HNO3 = Cu(NO3)2 + H2O
2) 2Mg + O2 =2 MgO
MgO + SO3 = MgSO4
MgSO4 +2 NaOH = Mg(OH)2 + Na2SO4
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1)2 Сu + O2 = 2CuO
CuO + 2HNO3 = Cu(NO3)2 + H2O
2) 2Mg + O2 =2 MgO
MgO + SO3 = MgSO4
MgSO4 +2 NaOH = Mg(OH)2 + Na2SO4