Question

к 150 г 15% раствора соли добавили 200 г 10% раствора соли. найдите массовую долю соли в полученном растворе

Answer 1

Объяснение:

w (соли) = (m раств.в-ва/m р-ра) * 100%

$\frac{(150 \times 0.15) \times (200 \times 0.1)}{150 + 200} \times 100 \\ \frac{22.5 + 20}{350} \times 100 \\ \frac{42.5}{350} \times 100$

w (соли) = 12,14 %

Answer 2

Calculating the Mass Fraction of Salt in the Solution

To calculate the mass fraction of salt in the resulting solution, we can use the following formula:

Mass fraction of salt = (mass of salt in solution) / (total mass of solution)

First, we need to calculate the mass of salt in each of the original solutions, and then determine the total mass of the resulting solution after mixing them together.

Calculating the Mass of Salt in the 15% Salt Solution

The mass of salt in the 150g of 15% salt solution can be calculated using the formula:

Mass of salt = (percentage of salt / 100) * mass of solution

Substituting the given values: **Mass of salt = (15 / 100) *