# How many milliliters are in 0.0020 L?

$2 m L$
Remember that there are 1000 mL in 1 L, so using the conversion factor $\frac{1000 m L}{1 L}$ to cancel out the litres and change it to mL, we get...
$0.0020 L \cdot \frac{1000 m L}{1 L} = 2 m L$