What is the concentration of a medication if a dose of 0.4 mg/mL is available to administer 0.8 mg?

To determine the volume needed to administer a specific dose of medication, you can use the formula:

[ \text{Volume} = \frac{\text{Dose}}{\text{Concentration}} ]

In this scenario, the dose to be administered is 0.8 mg, and the concentration of the medication is 0.4 mg/mL. Plugging in these values:

[ \text{Volume} = \frac{0.8 \text{ mg}}{0.4 \text{ mg/mL}} = 2.0 \text{ mL} ]

Thus, the calculation reveals that a volume of 2.0 mL is required to achieve the dose of 0.8 mg from a concentration of 0.4 mg/mL. This means that the correct answer reflects the need to provide the necessary volume to ensure the proper dosage is administered, which is essential for effective medication delivery and patient safety.