Предмет: Химия, автор: damnum

маса розчину 300гр маса води в ньому 150 гр. Знайти масову частку речовини в розчині. срочно!!!

Ответы

Автор ответа: olimpiadsUser

1

Если общая масса раствора 300 грамм, а масса воды 150 грамм, то мы можем найти массу вещества в растворе

От общей массы отнимаем массу воды:
300 - 150 = 150 гр.
По формуле найдём в процентах содеражание вещества в растворе
w = (масса вещества)/(масса раствора)
w = 150 / 300 = 0,5
w = 50%

Ответ: 50%

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