What will be the mass fraction in the solution obtained by mixing 350 g. 18% in 250 g. 15% solution of this salt?

Let us determine the mass fraction of salt in the solution after mixing the two solutions.
W (salts) = W1 • m1 + W2 • m2 / (m1 + m2) = 18% • 350 g + 15% • 250 g / (350 g + 250 g) = 16.8%.



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