I believe the answer is 321 , but I’m not sure . Can I be reassured?

Jasonwalsh asked Jan 8, 2023

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Jasonwalsh asked Jan 8, 2023

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15 votes

1) Average atomic mass. It is the weighted average mass of the atom.

$average\text{ }atomic\text{ }mass=(320*0.75)+(324*0.25)=321\text{ }amu$

Option B.

FerDensetsu answered Jan 12, 2023

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