August 2022 1 11 Report
9. 2H3PO4 + 3Ba(OH)2 = Ba3(PO4)2 + 6H2O
В ходе реакции выделилось 54г воды, какова массовая доля вещества во вступившем в реакцию растворе H3PO4, если масса все раствора составляла 100г?
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