Final answer:
To determine the drops per minute, convert the volume to drops using the drop factor and then divide by the number of minutes.
Step-by-step explanation:
To determine the number of drops per minute, we need to use the drop factor provided. The drop factor tells us how many drops there are in 1 milliliter (mL). In this case, the drop factor is 10 gtt/mL.
First, we need to convert the volume from mL to drops by multiplying by the drop factor. 2,500 mL multiplied by 10 gtt/mL gives us 25,000 gtt.
Next, we need to convert the time from hours to minutes. Since there are 60 minutes in 1 hour, we multiply 12 hours by 60 to get 720 minutes.
Finally, we divide the number of drops (25,000 gtt) by the number of minutes (720 min) to get the drops per minute. 25,000 gtt divided by 720 min equals approximately 34.7 gtt/min. Therefore, the answer is approximately 34.7 gtt/min.