Find the mass fraction of a substance in a solution obtained by mixing 120 grams of water in 4 grams of salt.
| August 15, 2021 | education
Given:
m (water) = 120 g
m (salt) = 4 g
To find:
ω (salt) -?
1) m solution (salt) = m (salt) + m (water) = 4 + 120 = 124 g;
2) ω (salt) = m * 100% / m solution = 4 * 100% / 124 = 3%.
Answer: The mass fraction of salt is 3%.
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.
