To 50 g of an 8% salt solution, 4 g of salt was added and 10 g of water was evaporated. What was the mass
| December 3, 2020 | education
To 50 g of an 8% salt solution, 4 g of salt was added and 10 g of water was evaporated. What was the mass fraction of salt in the resulting solution?
m (solution) = 50 + 4-10 = 44 g
m (salt) = 50 * 0.08 = 4 g in the initial solution
after adding 4 g m (salt) = 4 + 4 = 8 g
w (salt in the resulting solution) = m (salt) \ m (solution) = 8 \ 44 = 18%
Answer: 18%
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