Final answer:
The D5W IV ordered at 50 mL/hr will run for 10 hours when the total volume is 500 mL.
Step-by-step explanation:
To calculate how many hours the IV will run, you need to divide the total volume of the IV solution by the flow rate. The order is for 500 mL D5W IV to be administered at a rate of 50 mL/hr. By dividing the total volume (500 mL) by the flow rate (50 mL/hr), you get the total time the IV will run.
To perform the calculation:
500 mL ÷ 50 mL/hr = 10 hours
Therefore, the IV will run for a total of 10 hours.