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sofiabarashkov
@sofiabarashkov
November 2021
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Смешали 200 г. 5 процентного раствора и 50г. 10 процентного раствора соли. какого концентрата новый раствор?
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DarkChemist
M (вещ.)1 = 200 * 0,05 = 10 (г)
m (вещ.)2 = 50 * 0,1 = 5 (г)
m всего р-ра = 200 + 50 = 250 (г)
ω (вещ.) в новом р-ре = (m (вещ.)1 + m (вещ.)2) / m всего р-ра * 100% = (10 + 5) / 250 * 100% = 6 %
Ответ: 6%
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Answers & Comments
m (вещ.)2 = 50 * 0,1 = 5 (г)
m всего р-ра = 200 + 50 = 250 (г)
ω (вещ.) в новом р-ре = (m (вещ.)1 + m (вещ.)2) / m всего р-ра * 100% = (10 + 5) / 250 * 100% = 6 %
Ответ: 6%