July 2022 1 3 Report
Подставьте формулы кислот вместо знака вопроса и уравняйте уравнения реакций: [3]
CaO+?→Ca(NO3)2+H2O
Fe2O3+?→FeCl3+H2O
Na2O+?→Na3PO4+H2O
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