In this video, Mr. Krug shows students how to calculate a weighted average and how this concept is used to determine the average atomic mass (or atomic weight) for an element, using isotope abundance data for that element. He works several examples and shows students how to solve these problems in chemistry.
00:00 What Is an Average?
01:02 Weighted Averages
04:00 What Does Average Atomic Mass Mean?
04:44 Example 1
06:47 Example 2
09:10 Conclusion
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