Объяснение:
1. Mg+H2SO4-MgSO4+H2
2.MgO+H2SO4-MgSO4+H2O
3. 2Al+3H2SO4-Al2(SO4)3+3H2
4.Ba(NO3)2+H2SO4-BaSO4+2HNO3
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Объяснение:
1. Mg+H2SO4-MgSO4+H2
2.MgO+H2SO4-MgSO4+H2O
3. 2Al+3H2SO4-Al2(SO4)3+3H2
4.Ba(NO3)2+H2SO4-BaSO4+2HNO3