July 2022 1 5 Report
При разложении перманганата калия(KMnO4) образовалось 22, 4 л кислорода. Сколько грамм перманганата вступило в реакцию?
Уравнение:
KMnO4=K2Mn4+MnO2+O2 ДАМ 50 БАЛЛОВ
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