mass spectrometry Flashcards
1
Q
what is mass spectrometry used for?
A
finding the relative formula mass of a compound
2
Q
what do the peaks in a mass spectrum show
A
fragments of the original molecule
3
Q
which peak shows the molecular ion peak
A
the furthest
4
Q
what is the base peak?
A
the tallest
5
Q
what happens when molecules are bombarded with high energy electrons?
A
molecules break into positive fragments and a radical
6
Q
which part of the molecule is detected when it is broken up?
A
the positive fragments
7
Q
how would a mass spectrum show different isotopes
A
the number of peaks represents the number of isotopes
8
Q
why would the mr of a space probe be different to the mr on earth
A
different isotopic abundances
