Prepare 250 g of 15% salt solution.
May 14, 2021 | education
| The mass of the solution is 250 grams;
To find the mass of salt, it is necessary to multiply its mass fraction by the mass of the solution.
m salt = 250 x 0.15 = 37.5 grams;
To find the mass of water, subtract the mass of salt from the mass of the solution:
m of water = 250 – 37.5 = 212.5 grams;
The density of water is 1 gram / cm3. To prepare this solution, you need to measure out 212.5 milliliters of water.
Check: 212.5 + 37.5 = 250;
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.