What masses of salt and water must be taken to prepare 500 g of a solution with a mass fraction of 6%?

1. It is known that the entire mass of the solution is 500 g, the mass fraction of salt is 6%.

In this case, you just need to find 6% of 500g:

m (salt) = 500 * 6% = 30g.

2. To find out the mass of water, subtract the mass of salt from the mass of the solution:

m (water) = 500g – 30g = 470g.

Answer: m (salt) = 30g, m (water) = 470g.