How to Find Atomic Mass from Isotopes & % Abundance

*I recommend watching this in x1.25 - 1.5 speed

This video goes over how to find the atomic mass (otherwise called "average atomic mass") of an element (perhaps "element X" in problems) using a set of given isotopes and their corresponding percent abundances. Understanding this process is pretty important for figuring out how to do the opposite (finding percent abundance of each isotope of an element), which will be the topic of the next video in this series.

The basic concept here is that elements in nature can exist in several different isotopes, which are forms of the same element with the same number of protons but a slightly different number of neutrons, altering the atomic mass. The atomic mass displayed on the periodic table for each element is typically based on the average of all of the atomic masses of these isotopes, or at least the most common ones that have been discovered so far.

Hope this helps someone! Let me know down below if:
- you have an easier way to do these
- you found a mistake or want clarification on something
- you found this helpful :D

* I am not an expert in this topic. I am just a clinical lab scientist and life-long student who learns best from videos/visual representations and demonstration and have often turned to Youtube for help learning. My hope is that others in the same boat find and benefit from this.

Main Helpful Sources:
-Khan Academy
-courses.lumenlearning.com/boundless-chemistry/c…

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