Предмет: Химия, автор: marinaatamashko52

Найти количество вещества и массу 1.2*10^23 молекул водорода

Ответы

Автор ответа: ogaforoga

Ответ:

n=N/NA=1,2×10^23/6,02×10^23=0,2 моль (округление)

m(H2)=n*M=0,2 моль×2 г/моль=0,4 г

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