predict whether the following reactions are possible. Explain
your answers.

a. Ni(s) + MgSO4(aq) →→→→ NiSO4(aq) + Mg(s)

b. 3Mg(s) + Al₂(SO4)3(aq) →→→→ 3MgSO4(aq) + 2Al(s)

c. Pb(s) + 2H₂O(1)→→→→ Pb(OH)₂(aq) + H₂(g)

Help please!!!!