Question

10. Смешали 40 литров 15 процентного водного раствора некоторого вещества с 80 литрами 30 процентного водного раствора этого же вещества. Найдите новую концентрацию смеси.​

Answer 1

Ответ:

25%

Пошаговое объяснение:

Answer 2

Calculation of the New Concentration

To find the new concentration of the mixture, we need to calculate the total amount of the substance in the mixture and divide it by the total volume of the mixture.

Let's assume the substance in question is represented by X.

Given: - 40 liters of a 15% aqueous solution of X - 80 liters of a 30% aqueous solution of X

To calculate the total amount of X in the mixture, we can use the formula:

Total amount of X = (Volume of solution 1 * Concentration of solution 1) + (Volume of solution 2 * Concentration of solution 2)

Plugging in the values: Total amount of X = (40 liters * 15%) + (80 liters * 30%)

Now, let's calculate the new concentration of the mixture.

New concentration = (Total amount of X / Total volume of the mixture) * 100

Plugging in the values: New concentration = (Total amount of X / (40 liters + 80 liters)) * 100

Now, let's perform the calculations.