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percentage abundance

Does anyone know how to find the percentage abundance using the relative atomic mass because i'm struggling to understand how to answer the questions for it
Original post by CJ_bangtan
Does anyone know how to find the percentage abundance using the relative atomic mass because i'm struggling to understand how to answer the questions for it

if you know the isotopes which formed the RAM, you can form simultaneous equations to find the answer
e.g. if the 2 isotopes (a and b) are 35 and 37 and their respective percentages were A and B:
A + B = 100%
35A +37B = RAM (effectively rearranging the calculating RAM formula)
Hope this helps :smile:

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