Ответ:
1. CH4+2O2= CO2+2H2O
2. 5O2+4P=2P2O5
3. Fe + O2= FeO2
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Ответ:
1. CH4+2O2= CO2+2H2O
2. 5O2+4P=2P2O5
3. Fe + O2= FeO2