What is the percent abundance of the lower-mass isotope

Reference no: EM13154231

Boron has two principal naturally occurring isotopes, 10B (isotopic mass 10.013 amu) and 11B (isotopic mass 11.009 amu). If a random sample of this element collected from the tail of a comet has an weighted average atomic mass of 10.788 amu, what is the percent abundance of the lower-mass isotope?

Reference no: EM13154231

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