What is the weight in grams of drug in 300ml of a 2% solution?

To determine the weight of the drug in a 2% solution, it's essential to understand what a percentage solution means. A 2% solution indicates that there are 2 grams of the drug for every 100 milliliters of solution.

First, let's calculate the amount of drug in 300 milliliters:

1. Find the ratio of drug in milliliters:

• Since 100 ml contains 2 grams, we can set up a proportion for 300 ml.

• The calculation is as follows:

[

\text{grams of drug} = 2 , \text{grams} \times \left( \frac{300 , \text{ml}}{100 , \text{ml}} \right)

]

2. Performing the multiplication:

[

\text{grams of drug} = 2 \times 3 = 6 , \text{grams}

]

Thus, in 300 ml of a 2% solution, there are 6 grams of the drug. This aligns with the choice provided, indicating that the answer is indeed correct. By understanding the calculation based on the percentage concentration, you've effectively determined the amount of drug