Calculate what mass of a salt solution by mass fraction should be taken to prepare 100 g

Calculate what mass of a salt solution by mass fraction should be taken to prepare 100 g of a solution of the same salt with water equal to 2%

Let’s calculate the weight of the dissolved salt.

M salt = 100 x 0.02 = 2 grams;

Similarly, we find the weight of the solvent (water).

(In the calculations, we take the density of water equal to 1 gram / ml).

M water = 100 x 0.98 = 98 grams = 98 ml;

Let’s check. To do this, add the masses of the components of the solution and get the weight of the solution in question.

2 + 98 = 100;