Course
Atomic Mass
Calculate average atomic mass as well as percent abundance.
Modules (4)
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Average Atomic Mass
Vocab words for average atomic mass
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Atomic Mass
How to calculate atomic mass
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Calculating Percent Abundance
To calculate percent abundance from relative abundance, multiply the relative abundance by 100%. For example, if the relative abundance is 0.34, the percent abundance is 34%. _______________________________________________________________________________________________________________________________________________________________________________________ To calculate percent abundance from atomic mass and relative atomic mass, set one unknown to x and the other to 1-x. The first unknown can replace the x in the second unknown. Therefore if [unknown 1 = a] and [unknown 2 = b] and a(x) + b(1-x) = the relative atomic mass, then a(x) + b - bx = relative atomic mass. Knowing the relative atomic mass and the values of a and b, you can insert them into the equation to solve for x. Then from there, you can solve for the unknowns. _______________________________________________________________________________________________________________________________________________________________________________________ Here is a link for a helpful video: https://youtu.be/6CfSyGd5Ry4
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Atomic Mass Quiz
A quiz on the aspects of atomic mass and isotopes.
| Course resource | Original resource | Created by |
|---|---|---|
| Average Atomic Mass | Average Atomic Mass | Holly Nephew |
| Atomic Mass | Atomic Mass | Holly Nephew |
| Atomic Mass Quiz | Atomic Mass Quiz | Holly Nephew |