определите массу водорода, необходимого для получения 1,8 Х 10"24 молекул воды
Решение:
Запишем уравнение
2H2+02=2H20
Определим Количества вещества воды:
n(H20)= 1.8*10^24/6*10^24=0.3 моль
отсюда n(H2) = 0.3 моль
m(H2) = молярная масса * количество вещества = 2* 0,3 = 0,6 г.
ответ: 0,6 г.
Автор:
declanthorntonДобавить свой ответ
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