Question

Приготовить 25% раствор соли.

Answer 1

берем 25 г соли и 75 воды,

w = масса вещества/масса раствора, 

масса раствора = масса вещества + ьасса растворителя)

(только соль -  не NaCl, а то не растворится, а например, нитрат натрия)

Answer 2

на 100 грамм воды 25 грамм соли

Answer 3

Preparing a 25% Salt Solution

To prepare a 25% salt solution, you will need to follow a specific ratio of salt to water. The percentage concentration of a solution is calculated as the amount of solute (in this case, salt) divided by the total amount of solution (salt + water), multiplied by 100.

To calculate the amount of salt and water needed for a 25% salt solution, you can use the following formula:

Amount of Salt = (Percentage / 100) * Amount of Solution

Calculation

Using the formula, we can calculate the amount of salt needed for a 25% salt solution. Let's assume we want to prepare 1 liter of the solution.

Amount of Salt = (25 / 100) * 1000 ml = 250 grams

So, to prepare a 25% salt solution using 1 liter of water, you would need 250 grams of salt.

Conclusion

To prepare a 25% salt solution, you would need to dissolve 250 grams of salt in 1 liter of water.