# How Do You Calculate Natural Abundance of Isotopes?

## Answer

The atomic weight of an element is the relative atomic mass of that element. It is the mass weight of the elements, isotopes if any, and their relative abundance.The sum of the percentages of the isotopes is equal to 1 (100%), so the relative abundance of the isotopes can be found using simple algebra. To calculate Natural Abundance of Isotopes, you need to note the atomic mass of an isotope number and the % abundance of each isotope, multiply each of them by their atomic mass and add them together.
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 1. Gather the necessary information. You need to know the average atomic mass of the element in question. You will also need to know the atomic mass of each individual isotope for http://www.ehow.com/how_6076099_calculate-isotope-...
 http://www.chemteam.info/Mole/AvgAtomicW…. Example 3a is your problem, albeit with slightly different numbers.. Source(s): ChemTeam. http://answers.yahoo.com/question/index?qid=201208...
 1. Consult the periodic table to determine the atomic mass of the element whose isotopes you are measuring. You also need to know the atomic mass of each isotope being measured. 2 http://www.ehow.com/how_8650993_calculate-relative...
 1. Use a mass spectrometer to test an element or compound, according to the device's manual. 2. Look at the relative abundance on the mass spectrometer's output. This is a graphical http://www.ehow.com/how_7820886_calculate-percent-...
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1. Consult the periodic table to determine the atomic mass of the element whose isotopes you are measuring. You also need to know the atomic mass of each isotope ...
1. Use a mass spectrometer to test an element or compound, according to the device's manual. 2. Look at the relative abundance on the mass spectrometer's output. ...
Calculating the percentage abundance of each isotope in chemistry can be tricky. In chlorine there are two naturally occurring isotopes. You can find more information ...
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