Question

До розчину 120 г з масовою часткою солі 20% додали 6 г солі. Знайти масову частку солі в утвореному розчині.

Answer 1

Відповідь: 25%

Пояснення: 120/100*20=24грама=20%

                      24/4=5% Логічно що 6 грам солі = 5%

                      Логічно що масова частка солі 25%  або 1/4

Answer 2

Calculation of Mass Fraction of Salt in the Solution

To find the mass fraction of salt in the solution, we need to calculate the total mass of the solution and the mass of the added salt.

Given: - Mass of the solution = 120 g - Mass fraction of the salt in the solution = 20% - Mass of the added salt = 6 g

To calculate the mass fraction of the salt in the solution, we can use the formula:

Mass Fraction = (Mass of Salt / Total Mass of Solution) * 100

Let's substitute the given values into the formula:

Mass Fraction = (6 g / 120 g) * 100

Simplifying the equation:

Mass Fraction = 0.05 * 100

Mass Fraction = 5%

Therefore, the mass fraction of salt in the resulting solution is 5%.