Fe+2S=FeS2
2CO2=C2+2O2
S+O2=SO2
2P2O5=2P2+5O2
2K2S=2K2+2S2
2HCl=Cl2+H2
4Mg+N2=2Mg2N
Ag+H2=H2Ag
2Ca3P2=3Ca2+2P2
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Fe+2S=FeS2
2CO2=C2+2O2
S+O2=SO2
2P2O5=2P2+5O2
2K2S=2K2+2S2
2HCl=Cl2+H2
4Mg+N2=2Mg2N
Ag+H2=H2Ag
2Ca3P2=3Ca2+2P2