Question

Olga needs 100 g of 18% of salt solution. how much water and how much salt should she combine

Answer 1

To prepare a 100 g solution of 18% salt concentration, Olga should combine 18 g of salt with 82 g of water.

Step-by-step explanation:

The question revolves around the preparation of a saline solution with a specific concentration, which is a common task in chemistry. Olga needs to make 100 g of an 18% salt solution. This means that 18% of the solution's mass should be salt (NaCl), and the remaining 82% should be water.

First, we calculate the mass of the salt required by finding 18% of 100 g:

Next, we find the mass of the water by subtracting the mass of the salt from the total mass of the solution:

Therefore, to prepare a 100 g solution of 18% salt concentration, Olga should combine 18 g of salt with 82 g of water.