1.O2+4Li=2Li2O
2.O2+C=CO2
3.3O2+4B=2B2O3
4.O2+2Zn=2ZnO
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1.O2+4Li=2Li2O
2.O2+C=CO2
3.3O2+4B=2B2O3
4.O2+2Zn=2ZnO