Ответ:
4P + 5O₂ → 2P₂O₅
2Ca + O₂ → 2CaO
2Fe + 3S → Fe₂S₃
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Ответ:
4P + 5O₂ → 2P₂O₅
2Ca + O₂ → 2CaO
2Fe + 3S → Fe₂S₃