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vipdasha9712
@vipdasha9712
July 2022
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при растворении 2 г соды в воде получили 400 г раствора,определите массовую долю соды в растворе
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HelterSkelter
W=m(в-ва)/m(р-ра)
W=2/400=0.005 или 0.5%
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W=2/400=0.005 или 0.5%