Interpretation : The average mass differs from a weighted average mass to be explained.
Concept Introduction : An element's
Answer to Problem 56A
The average mass deals with the individual atomic mass of isotopes while the weighted average mass deals with the relative
Explanation of Solution
Average mass is the arithmetic mean of each isotope's atomic masses.
The weighted average mass of the atoms in a naturally occurring sample of an element is the atomic mass.
The mass and relative abundance of isotopes as they appear in nature are both reflected in the weighted average mass.
The value of average mass differs from the weighted average mass.
Chapter 4 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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