10 g of sodium chloride was dissolved in 40 g of water. Determine the mass fraction of sodium chloride in the resulting solution.
| February 6, 2021 | education
Mass fraction is the ratio of the mass of the solute to the mass of the solution. The formula for calculating the mass fraction of sodium chloride is as follows:
w (NaCl) = m (NaCl) / m (solution)
m (solution) = m (NaCl) + m (H2O) = 10 + 40 = 50 g
w (NaCl) = 10/50 = 0.2 or 20%
Answer: 20%
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