Question

Определить массовую долю сахара в растворе, если к 200г воды добавили 20г сахара

Answer 1

w вещ-ва = m вещ-ва /  m р-ра * 100 %

m р-ра = m вещ-ва + m(H2O)

m р-ра = 200 г + 20 г = 220 г

w вещ-ва (сахара) = 20 /  220  * 100 % = 9,1 %

Ответ: 9,1 %

Answer 2

W сахара = масса в-ва/массу раствора
20/220=0,09=9%

Answer 3

Determining the Mass Fraction of Sugar in a Solution

To determine the mass fraction of sugar in a solution, we can use the formula:

Mass fraction of solute = (mass of solute / total mass of solution) × 100%

Given: - Mass of water (solvent) = 200g - Mass of sugar (solute) = 20g

Using the formula, we can calculate the mass fraction of sugar in the solution.

Mass fraction of sugar = (20g / (200g + 20g)) × 100%

Mass fraction of sugar = (20g / 220g) × 100%

Mass fraction of sugar ≈ 9.09%

[[2 #]] provides information on calculating the mass fraction of a solute in a solution.

Therefore, the mass fraction of sugar in the solution is approximately 9.09%.