00:01
Hi everyone, it's ms.
00:02
Halsstrom and welcome to mass spectrum interpretation.
00:06
This is very easy.
00:08
We are looking here at the mass spectrum for an element, and the element we are looking at is europium, which is eu.
00:22
Europium.
00:24
And we know that europium has two isotopes, and the isotopes are the 151 and the 153 isotopes.
00:33
So i'm going to write those isotopes right here, the 151 and the 153, and europium is element number 63.
00:50
So there's my isotope notation.
00:53
Now this problem asks us to figure out the average atomic mass.
00:59
What is the average atomic mass based on the information we can look at here? i know that if you look at these, these are very close to the same height...