Answer to Question #150894 in General Chemistry for Lyna Moinifar

Question

The element boron has two naturally occurring isotopes with masses of 10.0129 amu and 11.0093 amu. What is the fractional abundance of the second isotope?

Answer 1

$10x + (1-x) (11) = 10.01\newline 10x + 11 -11x =10.01\newline -x = -0.99\newline x= 99\newline the abundance of B10=99$