# 80 g of water was dissolved in 7 g of NaCl salt. Determine the mass of the solution and the mass fraction of salt in it.

August 31, 2021 | education

| The mass of water is equal to – 80 g.

The mass of table salt is 7 g.

Let us determine the mass of the solution and the mass content of salt in the solution.

First, you need to determine the mass of the solution, it is necessary to add the mass of water and the mass of salt.

m solution = 80 + 7 = 87 g.

Next, we determine the mass content of salt in the solution, for this we apply the following formula.

W = m r.v / m r-ra * 100%.

W = 7/87 * 100 = 8%.

Therefore, the percentage of salt in the solution is 8 percent.

Answer: The percentage of salt is 8%.

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