The healthcare provider prescribes penicillin V potassium 650,000 units IM. The available vial is labeled, "Penicillin V potassium 500,000 units/mL." How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

Calculation: Formula: Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL) Desired dose = 650,000 units Available concentration = 500,000 units/mL Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL) = 650,000 units / 500,000 units/mL = 1.3 mL