Ответ:
1)4P + 5O2--> 2P2O5, 2)P2O5 + 3HOH--> H3PO4 + P(OH)3 3)2H3PO4 + 3CaO--> CA3(PO4)2 + 3HOH
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Ответ:
1)4P + 5O2--> 2P2O5, 2)P2O5 + 3HOH--> H3PO4 + P(OH)3 3)2H3PO4 + 3CaO--> CA3(PO4)2 + 3HOH