С + О2 = СО2
S + O2 = SO2
4 P + 5 O2 = 2 P2O5
4 Fe + 3 O2 = 2 Fe2O3
2 Mg + O2 = 2 MgO
2 Cu + O2 = 2 CuO
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Answers & Comments
С + О2 = СО2
S + O2 = SO2
4 P + 5 O2 = 2 P2O5
4 Fe + 3 O2 = 2 Fe2O3
2 Mg + O2 = 2 MgO
2 Cu + O2 = 2 CuO