- #1

Drakkith

Staff Emeritus

Science Advisor

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## Homework Statement

Of the objects below, which is the most dense?

A. an object with a volume of 13 dm

^{3}and a mass of 1.29 × 10

^{3}g

B. an object with a volume of 0.00212 m

^{3}and a mass of 4.22 × 10

^{4}mg

C. an object with a volume of 3.91 × 10

^{-24}nm

^{3}and a mass of 7.93 × 10

^{-1}ng

D. an object with a volume of 139 mL and a mass of 93 g

E. an object with a volume of 2.5 L and a mass of 12.5 kg

## Homework Equations

Density = mass/volume

## The Attempt at a Solution

I'm having trouble converting my units of volume so I can calculate these, especially with C. How do you get from cubic nanometers to cubic centimeters? I know it's not as easy as just dividing by 10

^{7}. I'm guessing you need to find out how many nanometers are in a centimeter and then cube the result and divide by that. Is there some quicker method that I'm missing?