1 - в СuO + H2SO4 -> CuSO4 + H2O
2-а CO2 + 2Mg -> 2MgO + C
3- д 2Al(OH)3 -> Al2O3 +3 H2O
4-г Fe2O3 + 3SO3 -> Fe2(SO4)3
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1 - в СuO + H2SO4 -> CuSO4 + H2O
2-а CO2 + 2Mg -> 2MgO + C
3- д 2Al(OH)3 -> Al2O3 +3 H2O
4-г Fe2O3 + 3SO3 -> Fe2(SO4)3