1)Н2SO4+Mg= 2)H2SO4+MgO= 3)CH3COOH+MgO= 4)H2SO4+NaOH= 5)CH3COOH+NaOH= 6)H2SO4+NaCO= 7)CH3COOH+NA2CO3=
если можно, то побыстреее
1)MgSO4+H2 2).MgSO4+H2O 3).(CH3COO)2Mg+H2O 4).NaSO4+2H2O 5).(CH3COO)2Na+H2O