A nurse is preparing to administer amoxicillin 30 mg/kg/day divided equally every 12 hr to a patient who weighs 33 lb. Available is amoxicillin 200 mg/5 mL suspension. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Step 1 is: Convert weight from pounds (lb) to kilograms (kg): 33 lb ÷ 2.2 kg/lb = 15 kg. Step 2 is: Calculate the total daily dosage of amoxicillin: 30 mg/kg/day × 15 kg = 450 mg/day. Step 3 is: Calculate the dosage per dose (every 12 hours): 450 mg/day ÷ 2 doses/day = 225 mg/dose. Step 4 is: Calculate the volume to administer per dose using the concentration (200 mg/5 mL): 225 mg ÷ (200 mg ÷ 5 mL) = 225 mg ÷ 40 mg/mL = 5.625 mL. Step 5 is: Round the answer to the nearest tenth: 5.6 mL. The nurse should administer 5.6 mL.