Posted by **matt** on Friday, January 16, 2009 at 3:39am.

If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube

of the same material with sides 2.63 cm in length be?

- CHEM URGENT!! -
**Damon**, Friday, January 16, 2009 at 5:51am
the ratio of volumes is the cube of the length ratio:

(2.63)^3 = 18.19

18.19 * 25.68 = 467.2 g

- CHEM URGENT!! -
**DrBob222**, Friday, January 16, 2009 at 11:36am
Damon has worked this problem as a math problem. If you wish to look at it from a chemistry perspective (that's the title of your post); calculate density of the first one.

volume = 1 cm x 1 cm x 1 cm = 1 cc.

density = mass/volume = 25.68/1 cc = 25.68 g/cc.

Second cube.

volume = 2.63cm x 2.63 cm x 2.63 cm = 18.19 cc

mass = volume x density = 18.19 g x 25.68 g/cc = 467.2 grams.

By the way, there aren't many things with a density of 26 g/cc.

- CHEM URGENT!! -
**drwls**, Friday, January 16, 2009 at 2:00pm
DrBob makes an interesting point: "By the way, there aren't many things with a density of 26 g/cc."

The two densest things I could find were uranium (18.9 g/cc and plutonium (19.8 g/cc)

I hope you aren't planning to make a bomb.

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