Answer to Question #133645 in General Chemistry for eri

Question

An element consists of 90.51% of an isotope with an atomic mass of 19.992 amu of 0.27% of an isotope with an atomic mass of 20.994 amu and 9.92% of an isotope with an atomic mass of 21.990 amu. What is the atomic weight of the element?

Answer 1

M = (0.9051*19.992)+(0.0027*20.994)+(0.0992*21.990)= 20.3328

Answer is M = 20.3328. It's Neon