In 425 g of a 10% solution, 175 g of 40% was added. What will be the mass fraction of the resulting solution?

univerkov | January 6, 2021 | education

To determine the mass fraction of a solution obtained after mixing two solutions with different percentages, we will use the formula for total masses and concentrations.
W (solution) = W1 • m1 + W2 • m2 / (m1 + m2) = 10% • 425 g + 40% • 175 g / (425 g + 175 g) = 4250 + 7000/600 = 18.75%.

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