There are three stable isotopes of silicon: 28Si, 29Si, and 30Si. Their masses and natural abundances are: 27.9769u (92.2%), 28.9765u (4.7%), and 29.9738u (3.1%). Calculate the weighted average of element silicon, in units of u.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter2: Atoms Molecules And Ions
Section2.2: Isotopes And Atomic Weight
Problem 2.3CYU: Neon has three stable isotopes, one with a small abundance. What are the abundances of the other two...
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There are three stable isotopes of silicon: 28Si, 29Si, and 30Si. Their masses and natural abundances are: 27.9769u (92.2%), 28.9765u (4.7%), and 29.9738u (3.1%). Calculate the weighted average of element silicon, in units of u.

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