Calculate the mass of fructose and water required to prepare 400 grams of a 20 percent solution.

The mass of fructose solution is 400 grams;

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

m fructose = 400 x 0.2 = 80 grams;

To find the mass of water, you need to subtract the mass of fructose from the mass of the solution:

m of water = 400 – 80 = 320 grams;

Check: 320 + 80 = 400;