Завершите уравнения реакций: P2O5+…=H3PO4 Na2O+…=NaOH K2O+…= KCl+H2O PH3+…=P2O5+H2O SO3+…=NA2SO4+… CaO+…=CaSi3 Осуществите следующие превращения: Cu―CuO―CuSo4―Cu(OH)2―CuO―Cu
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