What masses of salt and water should be taken to prepare 500 g of 0.9% NaCl solution?

What masses of salt and water should be taken to prepare 500 g of 0.9% NaCl solution? This solution is called isotonic and is widely used in honey. practice.

Let’s calculate the weight of the dissolved salt.

M salt = 500 x 0.009 = 4.5 grams;

In the same way, we find the weight of the solvent (water).

(In the calculations, we will make the assumption that the density of water is 1 gram / ml).

M water (solvent) = 500 x 0.75 = 495.5 grams = 495.5 ml;

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

4.5 + 495.5 = 500;