Question

Определите массовую долю сахара в растворе, получении при растворения 20 г сахара в 500 г воды

Answer 1

W= m (в-ва)*m(р-ра)
W= 20/(500+20)=0,038 
0, 038*100= 3,8%

Answer 2

Calculating the Mass Fraction of Sugar in the Solution

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

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

Given: - Mass of sugar (solute) = 20 g - Mass of water (solvent) = 500 g

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

Mass fraction = (20 g / (20 g + 500 g)) * 100%

Mass fraction = (20 g / 520 g) * 100%

Mass fraction ≈ 3.85%

Therefore, the mass fraction of sugar in the solution is approximately 3.85%.