# Mass fraction (%) of salt in a solution containing 50 g of salt and 200 g of water is

October 14, 2021 | education

| Given:

m (H2O) = 200 g;

m (salt) = 50 g.

Find:

W =?

Solution:

1) The formula for solving the problem: W = (m substance: m solution) x 100%.

2) m solution = m solute + m solvent;

m solution = 50 g + 200 g = 250 g.

3) Substitute the values: W = (50 g: 250 g) x 100% = 20%.

Answer: W = 20%

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