In 80 g of water, 20 g of salt was dissolved. Determine the mass fraction of salt in the resulting solution.

The mass of water is equal to – 80 g.

The mass of salt is 20 g.

In this task, you should determine the mass fraction of salt in the resulting solution. We write down the solution.

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

First of all, it is necessary to determine the mass of the solution. In order to determine the mass of the solution, add the mass of water and the mass of salt. Let’s write down the solution.

m solution = 80 + 20 = 100 g.

Then we determine the mass fraction of salt in the resulting solution. Next, we substitute the known values into the formula.

W = 20/100 * 100 = 20%.

It was found that the mass fraction of salt in the solution is equal to 20 percent.

Answer: 20%.