What is the mass fraction of sugar in the solution obtained by evaporating 200 g of a 20% solution to 70 g?

univerkov | September 4, 2021 | education

Given:
m (solution) = 200g
m (solution) = 70g
w% = 20%

Solution:
m (sugar) = 200 * 20/100 = 40 g
w% (sugar) = 40 * 100/70 = 57.1%

Answer: 57.1%

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