September 2021 0 11 Report
Схеме превращения P-3 -----> P+5 соответствует химическое уравнение: A) 4P+5O2=2P2O5
B) 3Mg+2P=Mg3P2
C) 4P+3O2=2P2O3
D) Ca3P2+4O2=P2O5+3CaO
Укажите степень окисления фосфора в левой части каждого из уравнений
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