Final answer:
To convert 2500 milliliters to liters, you divide 2500 by 1000, yielding the final answer of 2.5 liters.
Step-by-step explanation:
The student is asking how many liters (L) a nurse should administer if she is preparing to administer 2500 milliliters (mL) of a substance over 12 hours. To calculate this, we use the conversion factor that 1 liter is equal to 1000 milliliters. Therefore, to convert 2500 mL to liters, we can divide the volume in milliliters by 1000.
2500 mL ÷ 1000 = 2.5 L
Thus, the final answer is that the nurse should administer 2.5 liters of the substance.