Question

1. which of the following lists of mass units are arranged in order from smallest to largest?

a. gigagram, microgram, kilogram, megagram
b. microgram, centigram, kilogram, gigagram
c. milligram, microgram, centigram, kilogram
d. megagram, kilogram, centigram, milligram

Explanation:

Step1: Recall mass - unit prefixes

1 gigagram (Gg) = $10^{9}$ grams, 1 microgram ($\mu$g) = $10^{- 6}$ grams, 1 kilogram (kg)= $10^{3}$ grams, 1 megagram (Mg) = $10^{6}$ grams, 1 centigram (cg) = $10^{-2}$ grams, 1 milligram (mg)=$10^{-3}$ grams.

Step2: Compare the values

We know that $10^{-6}<10^{-2}<10^{3}<10^{9}$. So, microgram < centigram < kilogram < gigagram.

Answer:

B. Microgram, centigram, kilogram, gigagram