Thursday
November 27, 2014

Homework Help: chemistry

Posted by felpin on Thursday, October 27, 2011 at 7:34am.

Naturally occuring boron is composed of only two isoptopes 10/5B and 11/B with isotopic masses of 10.0129 and 11.00931 respectively. To account for the atomic mass of 10.811 what must be the percentage abundance of each isotope?

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