# Chemical Calculations & Mass Spectrometry

The formula that is the actual number of atoms present in a compound
molecular
1 of 14
The mass of a molecule compared to one twelth the mass of C12
relative molecular mass
2 of 14
At room temperature and pressure. how many dm3 of space does one mole of gas occupy?
twenty four
3 of 14
L = 6.02 X 10^23
4 of 14
The simplest whole number ratio of atoms present in a compound
empiracle formula
5 of 14
the mass of an atom compared to one twelfth the mass of an atom of C12
relative isotopic mass
6 of 14
The amount of substance that contains the same number of particles as there are atoms of carbon in C12
mole
7 of 14
When a sample is injected into a mass spectrometer
vaporisation
8 of 14
When ions are focused into a narrow beam and accelerate to a negative plate
acceleration
9 of 14
The average mass of an atom compared to one twelfth the mass of an atom of C12
relative atomic mass
10 of 14
In a mass spectrometer, when an electron gun fires high speed electrons and ionises the sample
ionisation
11 of 14
In a mass spectrometer, when an electromagnet with variable strength deflects the ions according to their m/z ratio
deflection
12 of 14
It removes air particles from a mass spectrometer
vacuum pump
13 of 14
It turns the ions into a small electrical current in a mass spectrometer
detector
14 of 14

## Other cards in this set

### Card 2

#### Front

The mass of a molecule compared to one twelth the mass of C12

#### Back

relative molecular mass

### Card 3

#### Front

At room temperature and pressure. how many dm3 of space does one mole of gas occupy?

L = 6.02 X 10^23

### Card 5

#### Front

The simplest whole number ratio of atoms present in a compound