July 2022 1 4 Report
Расставьте коэффициенты, преобразовав схемы в уравнения реакций. Укажите типы реакций. 
а)H2O+B2O3 ___ H3BO3
б) P2O5+H2O ___ H3PO4
H2O2 ___ H2O + O2.
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