Нужно: Дано и решение. Смешали 150 г 5% и 300 г 10 % раствора соли. Чему равна массовая доля вещества в полученном растворе?

Нужно: Дано и решение. Смешали 150 г 5% и 300 г 10 % раствора соли. Чему равна массовая доля вещества в полученном растворе?
- Предмет:
  Химия
- Автор:
  savionlandry
- 6 лет назад

Ответы 2

Быстро как-то твоя сестра всё расписала, да еще и в электронном виде. Ну всё равно, спасибо :)
- Автор:
  alanimcpherson
- 6 лет назад
- 0
Дано:m1(соли) = 150 гw1(соли) = 5% =0.05m2(соли) = 300 гw2(соли) = 10% =0.1Найтиw3(соли) -?Решение:w3 = (m1*w1 + m2*w2) / (m1+m2) w3 = (150*0.05 +300*0.1) / (150+300) = 37.5/450 = 0.083 = 8.3%
- Автор:
  israelriley
- 6 лет назад
- 0
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Нужно: Дано и решение. Смешали 150 г 5% и 300 г 10 % раствора соли. Чему равна массовая доля вещества в полученном растворе?

Ответы 2

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