If a solution is prepared with 100 ml containing 10% of a certain drug, how many milligrams are present in the solution?

To determine how many milligrams of the drug are present in a 100 ml solution with a concentration of 10%, start by understanding what a 10% solution means. A 10% solution indicates that there are 10 grams of the drug for every 100 ml of solution.

Since the solution is 100 ml, you can calculate the amount of drug in milligrams directly from the percentage concentration:

1. Convert grams to milligrams because there are 1000 milligrams in a gram:

• 10 grams = 10 x 1000 mg = 10,000 mg.

2. Because the solution contains 10 grams in the entire 100 ml, you can see that there’s actually a misunderstanding in the answer provided. The amount of drug in the 100 ml solution is indeed 10,000 mg, which is significantly larger than the other options listed.

Thus, the proper understanding leads to the conclusion that the solution contains a substantial amount of the drug, and it's vital to be clear on the conversions when calculating such concentrations.