MgSO4-X-MgO-Mg(NO3)2

Question

MgSO4-X-MgO-Mg(NO3)2

Answer 1

Mg(NO3)2 + 2NaOH = Mg(OH)2 + 2NaNO3

Mg(OH)2 -t-> MgO + H2O

MgO + H2SO4 = MgSO4 + H2O