In a 60ml 3% solution, how many grams of drug are present?

To find the number of grams of drug in a solution, you can use the formula for calculating the concentration of the solution. A 3% solution means there are 3 grams of the drug in every 100 ml of solution.

Given a 60 ml solution, you can set up the calculation as follows:

1. Determine how many grams are present in 60 ml, knowing that 3 grams exist in 100 ml:

• First, calculate how much is in 1 ml: ( 3 \text{ grams} / 100 \text{ ml} = 0.03 \text{ grams/ml} )

2. Then, multiply this rate by the total volume of the solution (60 ml):

• ( 0.03 \text{ grams/ml} \times 60 \text{ ml} = 1.8 \text{ grams} )

Since the correct calculations show that there are 1.8 grams of drug present in a 60 ml 3% solution, it aligns with the calculation for the concentration, confirming that the correct answer reflects the quantity determined through proper methodology.