Вопрос школьника по предмету Химия
Помогитеее…………. Сколько граммов соли и воды необходимо взять для получения 500 г. раствора с массой доли 0,16%
Ответ учителя по предмету Химия
m(соли) = w(соли) * m(р-ра) = 500 *0.16/100 =0.8 г
m(H2O) = m(р-ра) — m(соли) =500 -0.8 =499.2 г
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