Question

Mg(NO3)2->Mg(OH)2->x->MgSO4

Answer 1

Mq(NO3)₂+2NaOH=Mq(OH)₂+2NaNO3

Mq (OH)₂=MqO+H₂O

MqO+SO3=MqSO₄ 

Answer 2

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

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

MgO + H2SO4 = MgSO4 + H2O