Write balanced molecular, ionic, and net ionic equations (NIE) for each of the ... 3.Mg(OH)2(aq) +. 2HCl(aq). →. MgCl2(aq). +. 2H2O(l). Ionic Equation: Mg2+(aq). + ... 2-(aq). +. Ca2+(aq). →. Ca(C2O4)(s). 5. 2(NH4)3PO4(aq) +. 3Zn(NO3)2(aq) → ... 2-(aq). →. MgCrO4(s). 9. 2FeCl3(aq). +. 3Mg(s). →. 3MgCl2(aq) +. 2Fe(s).