A nurse is preparing to administer acetaminophen 400 mg PO to an adolescent. Available is acetaminophen liquid 160 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Identify the given information: Dose of acetaminophen: 400 mg Concentration of acetaminophen liquid: 160 mg/5 mL Calculate the volume of acetaminophen liquid to be administered: Volume = Dose (mg) / Concentration (mg/mL) Substitute the values: Volume = 400 mg / (160 mg/5 mL) Volume = 12.5 mL Round the answer to the nearest whole number: Volume ≈ 13 mL