Answer: Calculating the Atomic Weight of an Element from
Chapter , Problem 2PE(choose chapter or problem)
Problem 2PE
Calculating the Atomic Weight of an Element from Isotopic Abundances
Naturally occurring chlorine is 75.78% 35CI (atomic mass 34.969 amu) and 24.22% 37CI (atomic mass 36.966 amu). Calculate the atomic weight of chlorine.
Three isotopes of silicon occur in nature: 28Si (92.23%), atomic mass 27.97693 amu; 29Si (4.68%), atomic mass 28.97649 amu; and 30Si (3.09%), atomic mass 29.97377 amu.
Calculate the atomic weight of silicon.
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