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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