If a medication states it is 20% solution, how many grams are in 100ml?

To determine how many grams are in a 100 ml solution that is labeled as 20%, it is essential to understand what the percentage represents. A 20% solution means that there are 20 grams of solute (the substance being dissolved) in every 100 ml of the solution.

Since the question specifies a 100 ml volume, we can directly apply the percentage to find the mass of the solute:

1. The percentage concentration (20%) indicates that there are 20 grams of solute per 100 ml of solution.

2. Therefore, in 100 ml of this 20% solution, there are indeed 20 grams of the solute dissolved in it.

This calculation aligns perfectly with the definition of percentage concentration, confirming that the correct answer is 20 grams. Understanding how to interpret percentage solutions in terms of mass and volume is critical for pharmacy technicians, ensuring accurate medication preparation and dispensing.