Posted by **Maria** on Thursday, August 26, 2010 at 7:04pm.

A new penny has a mass of 2.54 g and a volume of 0.354 cm3. Is the penny made of pure copper? what is its density?

thanks:) Density is mass/volume but I don't know how to find it with g and cm3

- Density -
**DrBob222**, Thursday, August 26, 2010 at 7:08pm
Well, mass is in g and volume is in cc (stands for cubic centimeter) so

density = mass/volume = 2.54g/0.354 cc = ?? g/cc.

Then compare with the density of pure copper.

- Density -
**Maria**, Thursday, August 26, 2010 at 7:16pm
so how would I make it ___(g)/ 1 cc?

- Density -
**Damon**, Thursday, August 26, 2010 at 7:54pm
divide 2.54 by .354

- Density -
**Maria**, Thursday, August 26, 2010 at 8:02pm
oh yah. Thanks I got it:)

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