mass spectrometer

Question 1

use

Answer 1

determine all the isotopes present in a sample of an element

Question 2

RAM

Answer 2

(isotopic mass x %abundance)/ 100%

Question 3

what is the molecule in the mass spectrometer that is equal to the Mr

Answer 3

the peak with the largest m/z (molecular ion)

Question 4

steps of a mass spectrometer

Answer 4

ionisation
acceleration
deflection
detection

Question 5

ionisation

Answer 5

a high energy beam of electrons is used to knock an electron out of an atom making the neutral atom ionised to be a positive ion.

Question 6

accleration

Answer 6

Positively charged ions are accelerated using a magnetic field.

Question 7

deflection

Answer 7

charged ions are deflected using an electromagnetic field
- heavier ions will take the stronger field strength to be deflected

Question 8

detection

Answer 8

ions hit a negatively charged detector plate where a signal is generated.
- the greater the signal, the more ions are hitting the plate