Question

Рассчитайте массу соли и воды,которые необходимы для приготовления 50г 2%-ного раствора хлорида натрия.

Answer 1

Дано
m р-ра=50 г
w(NaCl)=2%
m(H2O)-?
m(NACl)-?
m(NACl)=50*0,02=1 г
m(H2O)=50-1=49 г

Answer 2

Calculating the Mass of Salt and Water for a 2% Sodium Chloride Solution

To calculate the mass of salt and water needed to prepare a 50g 2%-concentration solution of sodium chloride, we can use the formula for calculating the mass of a solution:

Mass of solute = (concentration of solute / 100) * mass of solution

In this case, the solute is sodium chloride, and the solution is a 2% sodium chloride solution with a total mass of 50g.

Using the formula, we can calculate the mass of sodium chloride and the mass of water required for the solution.

Calculating the