Предмет: Химия, автор: Fazzika

Решите пропорцией. Найдите массу 15*10²³ молекул кислорода.

Ответы

Автор ответа: KrioAn

15*10²³ - это х
6*10²³ - это 1 моль
Отсюда х = 15*10²³ / 6*10²³ = 2,5 моля

М (О) = 16*2 = 32 г/моль

m (О) = 32 г/моль * 2,5 моль = 80 г

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