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September 16, 2014

Homework Help: chemistry

Posted by Ben on Sunday, October 10, 2010 at 9:05pm.

Naturally occuring boron is 80.20% boron-11 and 19.80% of some other isotopic form of boron. What must be the atomic mass of this second isotope be in order to account for the 10.81 amu average atomic mass for boron?

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