Нужно расставит коэф. H2S+O2 = H2O +SO2
C2H4+O2= H2O+CO2
O2+C2H2=CO2+H2O
NH3+O2=NO +H2O
HCI+O2=H2O+CI2
FeS+O2=Fe2O3+SO2
FeS2+O2=SO2+Fe2O3
Cu2S+O2=CuO+SO2
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