How many milliliters are there in 0.5 liters?
A.
5.000
B.
50
C.
500
D.
5
The Correct answer and Explanation is:
The correct answer is:
C. 500
Explanation:
To solve this problem, we need to convert liters to milliliters. The metric system is based on powers of ten, making conversions straightforward. Here’s how to approach it:
- Understanding the Units:
- Liters (L) and milliliters (mL) are both units of volume in the metric system.
- The prefix “milli-” means one-thousandth (1/1000). Therefore, 1 liter equals 1,000 milliliters.
- Conversion Factor:
- The relationship between liters and milliliters is given by: 1 L=1,000 mL1 \text{ L} = 1,000 \text{ mL}1 L=1,000 mL
- This tells us that to convert from liters to milliliters, we multiply the number of liters by 1,000.
- Calculation:
- To convert 0.5 liters to milliliters: 0.5 L×1,000 mL/L=500 mL0.5 \text{ L} \times 1,000 \text{ mL/L} = 500 \text{ mL}0.5 L×1,000 mL/L=500 mL
- Thus, 0.5 liters is equal to 500 milliliters.
- Eliminating Other Options:
- Option A (5,000): This would be the result if you incorrectly multiplied by 10,000 instead of 1,000.
- Option B (50): This is incorrect as it suggests a conversion factor of 100 instead of 1,000.
- Option D (5): This option disregards the conversion factor entirely.
- Practical Application:
- Understanding these conversions is crucial in healthcare, especially when administering medication, as precise dosages are critical. For example, if a nurse needs to administer 0.5 liters of IV fluid, they must correctly identify that it equates to 500 milliliters to set the correct drip rate.
By grasping the conversion factor and its application, you ensure accurate and safe patient care.