A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?
A)3.5 × 10 5 cL
B)3.5 × 10 4 cL
C)3.5 cL
D)3.5 × 10 −4 cL
E)3.5 × 10 −3 cL

Question

Quizplus · Accepted Answer

To convert microliters to centiliters, we need to divide by 10^6 (since there are 10^6 microliters in a liter and 10^2 centiliters in a liter). 
35 microliters = 35/10^6 liters = 3.5 × 10^-5 liters 
3.5 × 10^-5 liters = 3.5 × 10^-3 centiliters (since we need to multiply by 10^2 to get from liters to centiliters). Therefore, the answer is E: 3.5 × 10^-3 cL.

A Dose of Medication Was Prescribed to Be 35 Microliters