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muriel_volestrangler

(106,004 posts)
13. 1 is more accurate
Mon Mar 12, 2012, 05:06 PM
Mar 2012
http://www.solarviews.com/eng/earthint.htmbout

The molten outer core is only about 30% of the Earth by mass. The mantle, on the other hand, is about 2/3rds of it, by mass. Iron is the most common element by mass, but only just - 32% iron, 30% oxygen.

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

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