Question

Chlorine has two isotopes. The isotope with a mass of 34.969 amu has a relative abundance of 75.77%. The isotope with a mass of 36.966 amu has a relative abundance of 24.33%. Calculate the atomic mass of chlorine. Please show how you got answer. lots of points. big money$$$$$$$$

Answer 1

(34.969*0.7577)+(36.966*0.2433) = the atomic mass of chlorine.

Input into a calculator and your answer is: 35.4898 AMU (atomic mass units)

Answer 2

34.969*.7577+36.966*.2433=35.489