Ответ:
2K+O2=K2O2
P4+3O2=2P2O3
2CH4+O2=2CO+4H2
2H2S+3O2=2SO2+2H2O
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Ответ:
2K+O2=K2O2
P4+3O2=2P2O3
2CH4+O2=2CO+4H2
2H2S+3O2=2SO2+2H2O