To prepare 125 g of the solution, 5 g of salt was used. Determine the mass fraction of the solute in the resulting solution.

The solution consists of salt and water.
The mass of the solution will be equal to the mass of these two substances.
M solution = m salt + m water = 125 + 5 = 130 grams;
The mass fraction of salt is equal to the ratio of the mass of salt to the mass of the solution.
Let’s find this value.
W salt = 5/130 = 0.038 = 3.8%.



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