Question

К 200 граммам 10%-ного раствора соли прилили 100 граммов 20%-ного раствора этой же соли и добавили 50 граммов воды. Рассчитать массовую долю соли в полученном растворе. Можно с дано и решением

Answer 1

Надеюсь, что правильно)

Answer 2

Calculation of Mass Fraction of Salt in the Solution

To calculate the mass fraction of salt in the resulting solution, we need to consider the initial amounts of the 10% salt solution, the 20% salt solution, and the added water.

Given: - 200 grams of a 10% salt solution - 100 grams of a 20% salt solution - 50 grams of water

Let's calculate the mass of salt in each solution and the total mass of the resulting solution.

1. Mass of salt in the 10% solution: - Mass of the 10% solution = 200 grams - Salt concentration in the 10% solution = 10% - Mass of salt in the 10% solution = 200 grams * (10/100) = 20 grams

2. Mass of salt in the 20% solution: - Mass of the 20% solution = 100 grams - Salt concentration in the 20% solution = 20% - Mass of salt in the 20% solution = 100 grams * (20/100) = 20 grams

3. Total mass of the resulting solution: - Mass of the 10% solution = 200 grams - Mass of the 20% solution = 100 grams - Mass of water = 50 grams - Total mass of the resulting solution = 200 grams + 100 grams + 50 grams = 350 grams

Now, let's calculate the mass fraction of salt in the resulting solution.

4. Mass fraction of salt in the resulting solution: - Total mass of salt in the resulting solution = Mass of salt in the 10% solution + Mass of salt in the 20% solution = 20 grams + 20 grams = 40 grams - Mass fraction of salt in the resulting solution = (Total mass of salt in the resulting solution / Total mass of the resulting solution) * 100% - Mass fraction of salt in the resulting solution = (40 grams / 350 grams) * 100% ≈ 11.43%

Therefore, the mass fraction of salt in the resulting solution is approximately 11.43%.

Please note that the provided search snippets did not directly answer the question. However, the calculation is based on the given information and the principles of calculating mass fractions.