Question

Вычислите массовую долю сахара в растворе образованном при растворении 20 г. сахара в 120г воды.

Answer 1

у меня получилось в ответе 5.335

Answer 2

Calculation of the Mass Fraction of Sugar in a Solution

To calculate the mass fraction of sugar in a solution, we need to divide the mass of sugar by the total mass of the solution and then multiply by 100 to express it as a percentage.

Given: - Mass of sugar (m1) = 20 g - Mass of water (m2) = 120 g

To find the mass fraction of sugar, we can use the formula:

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

Substituting the given values into the formula:

Mass Fraction of Sugar = (20 g / (20 g + 120 g)) * 100

Simplifying the expression:

Mass Fraction of Sugar = (20 g / 140 g) * 100

Calculating the value:

Mass Fraction of Sugar = 14.29%

Therefore, the mass fraction of sugar in the solution formed by dissolving 20 g of sugar in 120 g of water is approximately 14.29%.

Please note that the calculation assumes that the volume of the solution remains constant during the dissolution process.