Question

В растворе массой 250 г содержится сульфат натрия массой 50 г. Определите массовую долю соли в растворе

Answer 1

Массовая доля в-ва  = масса в-ва : массу раствора

 

Массовая доля соли = 50/250 =  0,2  (20%)

Answer 2

Calculation of Mass Fraction of Sodium Sulfate in Solution

To determine the mass fraction of sodium sulfate in the solution, we need to compare the mass of sodium sulfate to the total mass of the solution.

Given: - Mass of the solution = 250 g - Mass of sodium sulfate = 50 g

To calculate the mass fraction, we can use the formula:

Mass Fraction = (Mass of Sodium Sulfate / Mass of Solution) x 100%

Substituting the given values into the formula:

Mass Fraction = (50 g / 250 g) x 100%

Simplifying the calculation:

Mass Fraction = 0.2 x 100%

Therefore, the mass fraction of sodium sulfate in the solution is 20%.