Question

5. К 150г 10%-го раствора соли добавили 50г. воды. Какова процентная концентрация полученного раствора. (2)​

Answer 1

Объяснение:

Составляем пропорцию:

150г:10%

50г:x

x=10×50÷150

x=3,3%

Answer 2

Calculation of the Concentration of the Solution

To calculate the percentage concentration of the solution, we need to consider the initial amount of solute (salt) and the final volume of the solution after adding water.

Given: - Initial amount of 10% salt solution = 150g - Amount of water added = 50g

To calculate the concentration of the resulting solution, we can use the formula:

Concentration = (Amount of Solute / Final Volume) * 100

In this case, the final volume of the solution is the sum of the initial amount of the 10% salt solution and the amount of water added.

Let's calculate the concentration:

Step 1: Calculate the final volume of the solution: - Initial amount of 10% salt solution = 150g - Amount of water added = 50g - Final volume = Initial amount + Amount of water = 150g + 50g = 200g

Step 2: Calculate the concentration: - Amount of solute (salt) = 150g - Final volume of the solution = 200g

Concentration = (150g / 200g) * 100 = 75%

Therefore, the percentage concentration of the resulting solution is 75%.