To administer a medication with a concentration of 5 mg/mL, how much volume is needed for a dose of 20 mg?

To determine the volume needed for a dose of medication based on its concentration, you can use the formula:

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

In this case, the concentration of the medication is 5 mg/mL, and the required dose is 20 mg. Plugging these values into the formula gives:

Volume (mL) = 20 mg / 5 mg/mL = 4 mL

This calculation shows that to achieve a dose of 20 mg from a solution that has a concentration of 5 mg/mL, one needs to administer 4 mL.

The correct answer indicates the amount of volume required to obtain the desired dose accurately, which is essential for proper medication administration.