70 mL per hour will the nurse administer this medication. The solution to get the total medication per hour is 58 kg X 2 = 116 mcg/min. 116 mcg X 60 minutes = 6,960 mcg per hour. 6,960 mcg/1000 = 6.96 mg, rounded to 7 mg/hour. (7 mg/50 mg) X 500 mL = 70 mL/hour. The answer in this question is 70 mL/hour.