Question

What is the average atomic mass for the mixture that is 75% `""^133Cs`, 20% `""^132Cs`, 5% `""^134Cs`?

Answer 1

`"Average atomic mass" =132.85 a.m.u.`

Explanation:

The average atomic mass could be found by:

`"Average mass" = sum ("Abundance percentage"xx"isotope mass")`

`=>"Average mass" =(0.75xx133)+(0.20xx132)+(0.05xx134)=132.85 a.m.u.`