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Яка масу 50% розчину глюкози треба добили до 300 г води, щоб приготувати розчин масовою часткою 25%-
Предмет:
Химия -
Автор:
gissellewiley - 5 лет назад
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Ответы 1
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Тут можно легко справиться без вычислений. Раз концентрация уменьшается вдвое, то есть с 50% до 25%, то и раствор разбавляется вдвое. Нужно взять 300 г раствора и 300 г воды.
Ответ: 300 г
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Автор:
leo68 - 5 лет назад
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