Предмет: Химия, автор: Учебадостала

вычислите массу сахара и воды необходимую для приготовления 500 грамм 20%раствора

Ответы

Автор ответа: aiga5555
0
масса сахара находим по формуле mсахар=mраствора*w/100%= 500*20/100%=100г
m(H2O)= mраствора-mсоль=500г-100г=400г
Автор ответа: Учебадостала
0
не поняла ничего..
Автор ответа: aiga5555
0
что тут понимать если ты учила формулы то находишь по формуле
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