Вопрос школьника по предмету Химия
Чему равна процентная концентрация раствора , полученного в результате растворения 90г вещества в 180мл воды?
Ответ учителя по предмету Химия
w(массовая доля) = m(растворенного вещества/m(раствора)
Масса раствора равна 90г + 180г = 270г
w = 90г/270г = 0.333… (33.3%)
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Срочно! Заранее спасибо, большой поклон.
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