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10-09-2020
Chemistry

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Leora03 Leora03

11-09-2020

Answer:

9) 126.86 amu

Explanation:

Please see the attached picture for full solution.

*I can't see the fractional abundance for Q8. Thus, I am unable to help you with that.

To find the avg atomic mass, multiply the fractional abundance to each of the masses and add them all up.

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