Предмет: Химия, автор: innakirashova

У класній кімнаті міститься 4,93 · 1026 молекул кисню. Знайдіть кількість речовини кисню СРОЧНО!!!!!!!!!

Ответы

Автор ответа: annaproutorova3
1

Ответ:

дано

N(O2)=44,93•10^26

n(O2)-?

розв'язання

n=N/N

n(O2)= N(O2) / NA=4,93•10^26/6,02•10^23 моль^-1 =819 моль

Відповідь n(O2) = 819 моль

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