If you have a 20% solution, how many grams of solute are in 100 mL?

To determine the amount of solute in a 20% solution, you can use the definition of percentage concentration, which is expressed as grams of solute per 100 mL of solution. A 20% solution means that there are 20 grams of solute present in every 100 mL of solution.

Using this information, you can see that in 100 mL of a 20% solution, there are indeed 20 grams of solute. This is consistent with the formula for calculating concentration, where the percentage is equal to the amount of solute divided by the total volume of solution, multiplied by 100. Therefore, since you are dealing with a straightforward 20% solution, the simple calculation confirms that the correct answer is 20 grams of solute in 100 mL.