To 200 grams of solution, the mass fraction of the substance in which is 0.3, added 100 grams of water.
| December 11, 2020 | education
To 200 grams of solution, the mass fraction of the substance in which is 0.3, added 100 grams of water. Calculate the mass fraction of a solute in the resulting solution
m (substance) = m (solution) * W = 200 * 0.3 = 60 (g)
Proportion:
100 g – 30 g
200 g – x g
x = (30 * 200) / 100 = 60 (g)
W = m (substance) / m (solution) = 60/300 = 0.2
Answer: W = 0.2
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