1.
C + O2 => CO2
2Zn + O2 => 2ZnO
2.
S + O2 => SO2
2Mg + O2 => 2MgO
3.
Cu + O2=> CuO
Fe + O2=> FeO
4.
Cu + O2 => CuO
2Zn+ O2 => 2ZnO
5.
S + O2 => SO2
S + Zn => ZnO
6.
S + O2 => SO2
Fe + S = > FeS
C+O2-to->CO2
2Zn+O2-to->2ZnO
S+O2-to->SO2
2Mg+O2-to->2MgO
2Cu+O2-to->2CuO
3Fe+2O2-to->Fe3O4
2Zn+O2-to->2ZnO
Zn+Sto->ZnS
Fe+S-to->FeS