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biliino
@biliino
July 2022
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Решите задачу: В 380 г. воды растворили 20 г. - [tex]NaCl[/tex]. Найдите [tex]w(NaCl)[/tex] в растворе.
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saliva
W(NaCl) = m(NaCl)/m(р-ра)
m(р-ра)=m(NaCl)+ m(H2O) = 20 + 380 = 400 г
w(NaCl)=20 / 400 = 0.05 или 5%
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Answers & Comments
m(р-ра)=m(NaCl)+ m(H2O) = 20 + 380 = 400 г
w(NaCl)=20 / 400 = 0.05 или 5%