Final answer:
To measure out 1/1,000,000 of a liter, the volume measurement is expressed as one microliter (μL). A liter is equal to 1,000 milliliters, and since there are 1,000 microliters in a milliliter, the double conversion results in 1 microliter.
Step-by-step explanation:
If you were to measure out 1/1,000,000 of a liter, you would express this volume measurement as one microliter (μL). When converting from a larger unit to a smaller unit, such as liters to milliliters, you multiply by 1,000. However, when you need to convert to an even smaller measurement like microliters, you would multiply by an additional factor of 1,000 because there are 1,000 microliters in 1 milliliter.
So, using a two-step conversion: 1 liter is equal to 1,000 milliliters (mL), and then multiplying 1,000 mL by another 1,000 gives us 1,000,000 microliters (μL). Therefore, 1/1,000,000 of a liter is equal to 1 microliter (1 μL).