Предмет: Химия, автор: zuzrayana

к раствору массой 250г с w(соли)=10 добавили эту же соль массой 15 г рассчитайте массовую долю​

Ответы

Автор ответа: najmiddinovv
1

Ответ:

m = 250 × 0.1 = 25гр + 15 = 40 гр

m(р-ра) = 250гр

w(соли) = 40/250 = 16%

zuzrayana: спасибо
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