Предмет: Химия, автор: Arishka4465

cколько процентов соли содержится в растворе если в 200 г раствора содержится 150 г воды

Ответы

Автор ответа: sergooooooooo

если отнимем от 200 г раствора водуто получим оставшуюся соль!!

200г-150г=50г. отсюда пропорция !!!

200г-100%

50г-x%

x=100#50/200=25%

ответ:25%.

ВСЕ ПРАВИЛЬНО НЕ СЛУШАЙ НИКОГО ))))))

Автор ответа: trserg

массовая доля - это отношение массы вещества к массе растовра

в твоем случае масса вещества = 200-150 = 50г

массовая доля = 50/200 =0,25 или 25%

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