25 g of sodium chloride was dissolved in 150 g of water. Determine the mass fraction of salt in the resulting solution.

The solution consists of two components: water weighing 150 grams and salt weighing 25 grams.

The mass of the solution is equal to the sum of their masses:

m solution = 150 + 25 = 175 grams.

To find the mass fraction of salt, we divide the mass of salt by the mass of the solution:

C = m salt / m solution = 25/175 = 0.1429 = 14.29%;