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

Answer: m (water) = 155 g.
Explanation of the solution to the problem: to solve this problem, you must use the following formula:
m (solution) = m (salt) + m (water), where m (solution) is the mass of the solution,, m (salt) is the mass of the solute (salt), m (water) is the mass of water (solvent ).
Substituting into the formula all the values known from the condition of the problem, we get:
m (water) = m (solution) – m (salt).
m (water) = 200 – 45 = 155 g.