Предмет: Химия, автор: Шек

Заранее спасибо! Желательно с решением
1.Какой объем газа выделится при взаимодействии алюминия с раствором гидроксида калия массой 120 гр, с массовой долей гидроксида 40%?
2.Какой объем газа выделится при взаимодействии кальция массой 120 гр, содержащего 10% примесей с водой?
3.Какая масса алюминия вступила в реакцию с гидроксидом калия, если в результате ее выделился водород объемом 67,2 л? Какое кол-во вещества метаалюмината калия при этом образовалось?

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Автор ответа: valetka

вроде так............................

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