The two most abundant naturally occurring isotopes of carbon are carbon-12 (98.90%, 12.000 amu) and car- bon-13 (1.10%, 13.003 amu). From these abundances, calculate the atomic weight of carbon and compare your calculated value with that given in the Periodic Table.

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
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Chapter4: The Structure Of The Atom
Section: Chapter Questions
Problem 102A
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The two most abundant naturally occurring isotopes

of carbon are carbon-12 (98.90%, 12.000 amu) and car-
bon-13 (1.10%, 13.003 amu). From these abundances,

calculate the atomic weight of carbon and compare your
calculated value with that given in the Periodic Table.

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