Answer:
1000
Step-by-step explanation:
femto- is an SI prefix meaning 10^-15
pico- is an SI prefix meaning 10^-12
(1 pL)/(1 fL) = (10^-12 L)/(10^-15 L) = 10^(-12-(-15)) = 10^3
There are 1000 femtoliters in a picoliter.
