Предмет: Химия, автор: polinaburdyugova2002

Помогите срочно :
1.Масса хлороводорода в 50г его раствора составляет 2,9г. Определите массовую долю растворенного вещества.
2.Рассчитайте объем азота, полученного из 200л воздуха, Если известно, что объемная доля азота в воздухе составляет 78%

Ответы

Автор ответа: IgorXL

1: (2.9:50)*100%=5.8%(6%)

2:(78*200):100=156л (156дм3)

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