If a nurse needs to administer a medication with a concentration of 400 mg/mL, how much volume is needed for a 1.2 g dose?

To determine how much volume is needed to administer a dose of 1.2 g using a medication that has a concentration of 400 mg/mL, it's essential to convert the dose from grams to milligrams first. Since 1 gram is equal to 1000 milligrams, a dose of 1.2 grams is equal to 1200 milligrams.

Next, you can use the concentration of the medication to calculate the required volume. The concentration tells you that there are 400 milligrams in every milliliter of the solution. To find the volume needed for a 1200 mg dose, you can use the following formula:

Volume (mL) = Dose (mg) / Concentration (mg/mL)

Substituting the values:

Volume (mL) = 1200 mg / 400 mg/mL = 3 mL

Therefore, the volume needed to administer a 1.2 g dose with a concentration of 400 mg/mL is indeed 3 mL. This calculation and understanding of unit conversions are crucial in ensuring accurate medication administration, thus ensuring patient safety and effective treatment.