Calculate the mass of water and salt required to prepare 250 g of a 17% solution.

The mass of the solution is 250 grams;

To find the mass of salt, it is necessary to multiply its mass fraction by the mass of the solution.

m salt = 250 x 0.17 = 42.5 grams;

To find the mass of water, subtract the mass of salt from the mass of the solution:

m of water = 250 – 42.5 = 207.5 grams;

The density of water is 1 gram / cm3. To prepare this solution, you need to measure out 207.5 milliliters of water.

Check: 207.5 + 42.5 = 250;