200 grams of a salt solution with a mass fraction of a solute of 25% was evaporated. What is the mass of the released soda?

Any solution consists of water and a substance dissolved in it. If you evaporate all the water from the solution, then only the dissolved substance will remain.

Let’s find the mass of salt in solution by the formula:

m (salt) = m (solution) * w (solution) / 100% = 200g * 25% / 100% = 50g.

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