Answer to Question #182654 in General Chemistry for Anne Mukuka

Question

Naturally occurring copper has two isotopes with relative atomic masses 62.93 and 64.928. if the average relative atomic mass is 63.546, what are the relative % abundances of the two isotopes in this sample.

Answer 1

The relative abundance of the isotope with mass 62.93 is $0.75=75\%$ . Therefore, the relative abundance of the 64.928isotope is $=0.25=25\%$