The doctor orders medication S2.5 mg/kg/day in two divided doses. Medication S is supplied 40mg/mL. The patient weighs 121 lbs. What will the nurse administer per dose? Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.

Let's calculate the dosage step-by-step: 1. Convert pounds to kilograms: 121 lbs/ 2.20462 kg = 54.9 kg 2. Calculate the total daily dosage: 2.5 mg/kg/day x 54.9 kg = 137.25 mg/day 3. Calculate the dosage per dose (divided equally twice daily): 137.33 mg/day / 2 doses ≈ 68.625 mg/dose 4. Determine the concentration of the medication: 40 mg/mL 5. Calculate the volume needed: 68.67 mg / 40 mg/mL = 1.7 mL