Предмет: Химия, автор: ШКОЛЯРИК2016

Вычислите массовую долю соли в растворе (в процентах), полученному выпариванием воды массой 100 г с раствора массой 400 г с массовой долей соли 3%.

Ответы

Автор ответа: flsh
0
ω(соли) = m(соли)/m(раствора) = 400·0,03/(400-100) = 12/300 = 0,04 или 4%


Автор ответа: ШКОЛЯРИК2016
0
Спасибо большое!!!!!!!!!!!!)
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Fill in the gaps with the verbs in the correct form: (Past Simple Tense)

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And the rest is history!