Continuous intravenous infusion

1. A patient has an order for a continuous intravenous infusion of Regular insulin at 12 units per hour for a blood glucose level of 638 mg/dL. The insulin has a concentration of Regular insulin 50 units per 100 mL. How many milliliters per hour would the nurse infuse the insulin?

2. A patient with hyperglycemia has a continuous intravenous infusion of Regular insulin at 13 milliliters per hour. The insulin has a concentration of Regular insulin 100 units per 50 mL. How many units per hour of Regular insulin is the patient receiving?

3. A client is ordered diazepam 8 mg intravenous every 6 hours pro re nata  (PRN) anxiety. The diazepam is available in a 5 mg/mL vial. How many mL will the nurse administer?