35.1k views
2 votes
I believe the answer is 321 , but I’m not sure . Can I be reassured?

I believe the answer is 321 , but I’m not sure . Can I be reassured?-example-1
User Ersefuril
by
4.4k points

1 Answer

2 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.

User Kfir Erez
by
4.5k points