Объяснение:
4В + 3О2 = 2B2O3
2Н2 + О2 = 2H2O
S(4) + O2 = SO2
3Fe + 2O2 = FeO•Fe2O3
2PH3 + 4O2 = P2O5 + 3H2O
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Объяснение:
4В + 3О2 = 2B2O3
2Н2 + О2 = 2H2O
S(4) + O2 = SO2
3Fe + 2O2 = FeO•Fe2O3
2PH3 + 4O2 = P2O5 + 3H2O