 | How To Calculate Percent Abundance |
Glad you asked...
When an element has more than one isotope, you may need to find the percent abundance of each. The atomic weight of the element is needed, as well as the weights of the isotopes. Set up the equation:
[Heavy isotope's weight * (1-x)] + [Lighter isotope's weight * (x)] = Atomic weight
Solve for x to find the percent abundance of the lighter isotope. Examples can be found here: http://users.stlcc.edu/gkrishnan/atomicw...
Then again, this answer might help you...
You need to find the isotope number and then calculate that into a fraction and turn the fraction into a percent. Then divide by the atomic number than times it by the mass and turn the answer into a percent.