Question

В 75 г воды растворили 5г бромида калия.Рассчитайте массовую долю вещества в полученном растворе

Answer 1

Пшинрагмагомроиплиартарспрсрто от чпотр

Answer 2

Calculating the Mass Fraction of a Substance in a Solution

To calculate the mass fraction of a substance in a solution, we can use the following formula:

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

Given: - Mass of water (solvent) = 75g - Mass of potassium bromide (solute) = 5g

Calculation

Using the formula, we can calculate the mass fraction of potassium bromide in the solution:

Mass Fraction = (5g / (75g + 5g)) x 100%

Mass Fraction = (5g / 80g) x 100%

Mass Fraction ≈ 6.25%

So, the mass fraction of potassium bromide in the solution is approximately 6.25%.