Question

Некоторое количество 15 раствора соли смешали с таким же количеством 45 раствора.какая концентрация получившегося раствора

Answer 1

х раствора - 100 %

y соли        - 15%

y = 0.15x

 

х раствора - 100 %

y соли        - 45%

y=0.45x   растворы слили составляем новую пропорцию 2х           - 100 % 0,15х+0,45х   - Z %   z= (0.15x+0.45x)*100 :2x = 0.6x*100:2x = 30%

Answer 2

Calculating the Concentration of the Mixture

To calculate the concentration of the resulting solution after mixing equal amounts of a 15% salt solution and a 45% salt solution, we can use the weighted average formula.

Weighted Average Formula: The formula for calculating the concentration of the resulting solution is: C = (C1 * V1 + C2 * V2) / (V1 + V2) Where: - C = concentration of the resulting solution - C1 = concentration of the first solution - C2 = concentration of the second solution - V1 = volume of the first solution - V2 = volume of the second solution

Applying the Weighted Average Formula

In this case, both solutions are mixed in equal amounts, so V1 = V2. Let's calculate the concentration of the resulting solution using the given concentrations of the two solutions.

Given: - C1 (concentration of 15% salt solution) - C2 (concentration of 45% salt solution)

Using the weighted average formula: C = (15% * 1 + 45% * 1) / (1 + 1)

Calculation

C = (15 + 45) / 2 = 60 / 2 = 30%

So, the concentration of the resulting solution after mixing equal amounts of 15% and 45% salt solutions is 30%.