Calculate the mass of water and salt required to prepare a solution

Calculate the mass of water and salt required to prepare a solution with a volume of 240 ml and a mass fraction of salt of 15% (p = 1.1 g / ml).

The mass of the solution is 240 x 1.1 = 264 grams;

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

m of salt = 264 x 0.15 = 39.6 grams;

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

m of water = 264 – 39.6 = 224.4 grams;

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

Check: 224.4 + 39.6 = 264;