In a 3% local anesthetic solution, how many milligrams per milliliter does the solution contain?

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Multiple Choice

In a 3% local anesthetic solution, how many milligrams per milliliter does the solution contain?

Explanation:
Percent strength tells you how much drug is in a given volume. A 3% solution means 3 grams in 100 milliliters. Convert to milligrams per milliliter: 3 g is 3000 mg, and 3000 mg divided by 100 mL equals 30 mg per mL. So the solution contains 30 mg of anesthetic per milliliter. The other values come from misplacing the decimal or confusing the units (for example, 3 mg/mL would correspond to 0.3%, not 3%).

Percent strength tells you how much drug is in a given volume. A 3% solution means 3 grams in 100 milliliters. Convert to milligrams per milliliter: 3 g is 3000 mg, and 3000 mg divided by 100 mL equals 30 mg per mL. So the solution contains 30 mg of anesthetic per milliliter. The other values come from misplacing the decimal or confusing the units (for example, 3 mg/mL would correspond to 0.3%, not 3%).

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