140 g of salt was dissolved in 300 ml of water. Determine the mass fraction of salt in the resulting solution.
| February 12, 2021 | education
1. The density of water is 1 g / ml, which means the mass of the solution:
m (water) = ρ * V = 300 * 1 = 300 g;
2. find the mass of the solution:
m (solution) = m (salt) + m (water) = 140 + 300 = 440 g;
3.Calculate the mass fraction:
w (salt) = m (salt): m (solution) = 140: 440 = 0.3182 or 31.82%.
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