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08-11-2020
Chemistry

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Element X consist of two isotopes with masses of 62.9 and 64.9. The relative atomic mass of the element is 63.6. What is th
e percentage abundance of the lighter isotope? Show your working out.

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08-11-2020

Answer:

it is 50%

Explanation:

62.9x50=3145

64.9x50=3245

3245+3145=6390

6390/100=63.9

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