Chemistry 10th Edition

Published by Brooks/Cole Publishing Co.
ISBN 10: 1133610668
ISBN 13: 978-1-13361-066-3

Chapter 3 - Chemical Equations and Reaction of Stoichiometry - Exercises - Chemical Equations - Page 106: 2

Answer

The mass of a carbon-12 atom is 12 amu. The atomic mass of carbon is listed as 12.01 amu on the table on the inside front cover of this book because most naturally occurring elements (including carbon) have more than one isotope. Therefore, 12.01 is the average value.

Work Step by Step

The mass of a carbon-12 atom is 12 amu. The atomic mass of carbon is listed as 12.01 amu on the table on the inside front cover of this book because most naturally occurring elements (including carbon) have more than one isotope. Therefore, 12.01 is the average value.
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