Boron (B; Z=5) has two naturally occurring isotopes. Find the percent abundances of 1°B and 11B given these data: atomic mass of B=10.81 amu, isotopic mass of 1°B=10.0129 amu, and isotopic mass of 1"B=11.0093 amu. Round your answer to the nearest hundredth. (Hint: The sum of the fractional abundances is 1. If x=abundance of 1ºB, then 1-x= abundance of 11 B) % abundance of 10B = % % abundance of 11B =

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