The amount and the concentration of a salt solution is given. How much salt would you get if you evaporated all water from this solution?

To determine the amount of salt you would get after evaporating all the water from a salt solution, you need to know two things:

1. The volume of the salt solution before evaporation. 2. The concentration of the salt in that solution.

The concentration is usually expressed in terms of mass per unit volume, such as grams per liter (g/L). Here are the steps you would follow:

1. Note the volume of the salt solution. Let's say it is \( V \) liters. 2. Determine the concentration of the salt in the solution. Let's say it is \( C \) grams of salt per liter of solution. 3. Multiply the volume by the concentration to find the total amount of salt. Mathematically, \( \text{amount of salt} = V \times C \).

So, if you had 2 liters of a 100 g/L salt solution, you would have \( 2 \times 100 = 200 \) grams of salt in that solution.

By evaporating all the water from the solution, you would be left with the 200 grams of salt that was initially dissolved in the solution.