What is the amount in grams of drug in a 200ml solution at 1.5% concentration?

To determine the amount of drug in grams present in a solution based on its concentration, you can use the formula:

[

\text{Amount of drug (grams)} = \text{Volume of solution (mL)} \times \left(\frac{\text{Concentration (%)}}{100}\right)

]

In this case, you have a 200 mL solution with a concentration of 1.5%.

First, convert the concentration percentage into its decimal form:

[

1.5% = \frac{1.5}{100} = 0.015

]

Next, multiply the volume of the solution by the decimal concentration:

[

\text{Amount of drug} = 200 , \text{mL} \times 0.015 = 3 , \text{grams}

]

Thus, the amount of drug in the 200 mL solution at a 1.5% concentration is 3 grams.

This calculation clearly indicates that 3 grams is the correct answer based on the applied formula and proper units. The established method retrieves the exact mass of drug from the specified concentration and volume, demonstrating how concentration directly relates to the quantity of substance in a