Question

Finish the equations (some cannot react, just write cnr)

Mg + .................. → Mg(NO3)2 + NO + H2O
Al + .................. → AlBr3 + H2
K2O + HNO3 → .................. + H2O
Ba + H3PO4 → .................. + H2
Ca + HBr → .................. + H2
NaOH + .................. → Na3PO4 + H2O
Fe2O3 + HNO3 → .................. + H2O
Mg + .................. → MgCl2 + H2
FeO + .................. → FeCl2 + H2O
Fe3O4 + H2SO4 → .................................... + H2O
Ba + HNO3 → .................. + NO2 + H2O
Na + HNO3 → .................. + NH4NO3 + H2O
MgO + HBr → .................. + H2O
KOH + .................. → K2SO4 + H2O
FeO + HNO3 → .................. + NO + H2O
NaOH + HCl → .................. + H2O

Answer 1

Here are the finishes for each equation, respectively:

Mg + 4 HNO3 → Mg(NO3)2 + 2 NO + 2 H2O

2 Al + 6 HBr → 2 AlBr3 + 3 H2

K2O + 2 HNO3 → 2 KNO3 + H2O

Ba + H3PO4 → Ba3(PO4)2 + 3 H2

Ca + 2 HBr → CaBr2 + H2

3 NaOH + H3PO4 → Na3PO4 + 3 H2O

Fe2O3 + 6 HNO3 → 2 Fe(NO3)3 + 3 H2O

Mg + 2 HCl → MgCl2 + H2

FeO + 2 HCl → FeCl2 + H2O

Fe3O4 + 8 H2SO4 → 3 Fe2(SO4)3 + 8 H2O

Ba + 4 HNO3 → Ba(NO3)2 + 2 NO2 + 2 H2O

2 Na + 2 HNO3 → 2 NaNO3 + H2

MgO + 2 HBr → MgBr2 + H2O

2 KOH + H2SO4 → K2SO4 + 2 H2O

FeO + HNO3 → Fe(NO3)2 + NO + H2O

NaOH + HCl → NaCl + H2O