200 µL is equal to: a. 2 mL. b. 0.2 mL. c. 0.02 mL. d. 0.002 mL.
The Correct Answer and Explanation is :
The correct answer is b. 0.2 mL.
Explanation:
To convert from microliters (µL) to milliliters (mL), you need to understand the relationship between these two units of volume. The metric system is based on powers of 10, and it is essential to know the conversions between the different metric prefixes.
- 1 milliliter (mL) is equal to 1,000 microliters (µL).
- In other words:
[ 1 \, \text{mL} = 1,000 \, \text{µL} ]
This means that 1 microliter is 1/1,000 of a milliliter, or:
[
1 \, \text{µL} = 0.001 \, \text{mL}
]
Now, to convert 200 µL into milliliters, divide the number of microliters by 1,000:
[
200 \, \text{µL} = \frac{200}{1000} \, \text{mL} = 0.2 \, \text{mL}
]
Thus, 200 µL is equivalent to 0.2 mL.
Why the other options are incorrect:
- a. 2 mL: This is incorrect because 200 µL is much smaller than 2 mL. As shown above, 200 µL equals 0.2 mL, not 2 mL.
- c. 0.02 mL: This is also incorrect because 200 µL equals 0.2 mL, which is 10 times larger than 0.02 mL.
- d. 0.002 mL: This is incorrect for the same reason. 0.002 mL is smaller than 200 µL by a factor of 100, and the correct conversion is 0.2 mL.
Understanding these conversions is crucial in many fields, such as medicine, chemistry, and biology, where precise measurements are required.