Question

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

Answer 1

Ω=m(растворенного вещества) / m(раствора) * 100%
ω=50г / 250г * 100%= 20%

Answer 2

Calculating the Mass Fraction of Sodium Sulfate in the Solution

To determine the mass fraction of sodium sulfate in the solution, we can use the following formula:

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

Given: - Mass of sodium sulfate (Na2SO4) = 50 g - Total mass of the solution = 250 g

Calculation

Using the formula, we can calculate the mass fraction of sodium sulfate in the solution:

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

Mass Fraction = (1/5) x 100%

Mass Fraction = 20%

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

This calculation is based on the provided information and the formula for calculating mass fraction