The mass of water in a solution weighing 200 g containing 45 g of salt is

The mass of the solution consists of the sum of the masses of water and salt
M = mc + mw, hence the mass of water mw = M – mc
Given:
mc = 45g
M = 200g
To find:
mv =?
Decision:
mw = 200g – 45g = 155g
Answer: 155g is the mass of water.



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.