Question

К 60 г 10 % раствора сахара прибавили 40 г воды. Определить массовую долю сахара полученного в растворе

Answer 1

W= m(в-ва)*100*m(р-ра)
m(р-ра)  =m(в-ва) 100/w    m(р-ра)= 50*100/10+600г  m2(р-ра)=600+40= 640г
w2=60*100/640=9,4%
Ответ: 9,4%

Answer 2

Calculation of Mass Fraction of Sugar in the Solution

To determine the mass fraction of sugar in the solution, we need to calculate the total mass of the solution and the mass of sugar in the solution.

Given: - Initial solution: 60 g of 10% sugar solution - Added: 40 g of water

Calculation Steps:

1. Calculate the mass of the solution: - Initial mass of the solution = 60 g - Added mass of water = 40 g - Total mass of the solution = Initial mass + Added mass = 60 g + 40 g = 100 g

2. Calculate the mass of sugar in the solution: - Initial mass of sugar = 10% of the initial solution mass = 10% of 60 g = 6 g

3. Calculate the mass fraction of sugar in the solution: - Mass fraction of sugar = (Mass of sugar / Total mass of the solution) * 100% - Mass fraction of sugar = (6 g / 100 g) * 100% = 6%

Therefore, the mass fraction of sugar in the obtained solution is 6%.

Please note that the provided search results did not directly answer the question. The calculation was performed based on the given information and general knowledge of calculating mass fractions.