Calculate the mass of sodium chloride and the volume of water required to prepare a 1000 g solution with a 5% NACL mass fraction.

The mass of the solution is 1000 grams;
To find the mass of salt, it is necessary to multiply its mass fraction by the mass of the solution.
m of salt = 1000 x 0.05 = 50 grams;
To find the mass of water, subtract the mass of salt from the mass of the solution:
m of water = 1000 – 50 = 950 grams;
The density of water is 1 gram / cm3. To prepare this solution, you must measure out 950 milliliters of water.
Check: 950 + 50 = 1000;