2Mg+O2=2MgO
4Fe+3O2=2Fe2O3
Si+O2=SiO2
K2O+H2O=2KOH
PbO+H2=Pb+H2O
ZnO+H2=Zn+H2O
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2Mg+O2=2MgO
4Fe+3O2=2Fe2O3
Si+O2=SiO2
K2O+H2O=2KOH
PbO+H2=Pb+H2O
ZnO+H2=Zn+H2O