Question

В растворе массой 540г массовые доли соли и воды относятся как 3:5 (в порядке перечисления). Вычислите массу растворенной соли. Ответ дайте в граммах с точностью до десятых. Пожалуйста с пояснением

Answer 1

Ответ:

3х+5х=540

8х=540

х=540/8=67,5г

Масса соли: 67,5*3=202,5г

Answer 2

Calculation of the Mass of Dissolved Salt in a Solution

To calculate the mass of the dissolved salt in a solution, we need to use the given mass ratios of the salt and water. In this case, the mass ratios are given as 3:5, with the salt listed first and the water listed second.

Let's assume the mass of the salt is represented by 3x and the mass of the water is represented by 5x. Since the total mass of the solution is given as 540g, we can set up the following equation:

3x + 5x = 540g

Simplifying the equation, we get:

8x = 540g

Dividing both sides of the equation by 8, we find:

x = 67.5g

Now, we can calculate the mass of the dissolved salt by multiplying the mass ratio of the salt (3) by x:

Mass of dissolved salt = 3 * x = 3 * 67.5g = 202.5g

Therefore, the mass of the dissolved salt in the solution is 202.5 grams.

Please note that the accuracy of the answer is limited to one decimal place due to the given information.