1.Fe+H2O→ Fe3O4+H2
2.Ca+N2→ Ca3N2
3.Zn+KOH→ K2ZnO2+H2
4.Fe2O3+CO→ Fe+CO2
5.PbO+NH3→ Pb+H2O+N2
balance the equations
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Explanation:
1. 3Fe+H2O4→ Fe3O4+H2
2. 3Ca+N2→Ca3N2
3. Zn + 2KO2H2→K2ZnO2+H2
4.Fe2O3+CO→2Fe+(Co2)2
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