How long will a 500 ml IV bag last if it is infused at a rate of 100 ml/hr?

To determine how long a 500 ml IV bag will last when infused at a rate of 100 ml/hr, you can use the formula:

Time (hours) = Volume (ml) / Rate (ml/hr)

In this case, the volume is 500 ml and the infusion rate is 100 ml/hr. Plugging the values into the formula gives:

Time = 500 ml / 100 ml/hr = 5 hours

Therefore, the IV bag will last for 5 hours when infused at the specified rate. This reasoning confirms that the correct answer is indeed 5 hours, highlighting the importance of understanding how to use volume and rate to calculate duration in a clinical setting. It's essential for pharmacy technicians to be proficient in such calculations to ensure accurate medication administration.