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December 20, 2014

December 20, 2014

Posted by **ALISON** on Tuesday, August 30, 2011 at 3:35pm.

How do I explain this????What hypothesis would explain why the earth has a considerably higher density than any of these materials, which are abundant at the surface of the earth???

i got 2.88g/cm^3 for the earths density. is that right?

- Chemistry -
**DrBob222**, Tuesday, August 30, 2011 at 5:39pmI did not get 2.88 g/cc as a density but I could have made an error.

I used 4/3(*pi*r^3) for volume and converted diameter in m to cm first.

I converted mass in kg to grams first.

For the explanation, what is the core of the earth. If that is made of something much more dense it would make the overall density more than the surface area. Post your work if you want me to check the density calculation.

- Chemistry -
**DrBob222**, Tuesday, August 30, 2011 at 5:42pm - Chemistry -
**DrBob222**, Tuesday, August 30, 2011 at 5:44pmSee this link for the inner core.

http://en.wikipedia.org/wiki/Earth

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