The Mole Flashcards
1
Q
Define relative molecular mass
A
The weighted mean mass of an atom of a simple covalent molecule compared with 1/12 th of the mass of an atom of carbon-12
2
Q
Molecular mass
A
Simple structures
3
Q
Formula mass
A
Giant structures
4
Q
How to get molecular mass
A
Add up relative atomic masses
5
Q
What is a mole?
A
A mole is a substance containing as many particles as there are carbon atoms in exactly 12g of carbon-12
6
Q
What is avagadros constant?
A
6.02 x 10^23
7
Q
Molar mass units
A
Mass per mole of a substance - g/mol^-1
8
Q
What is molar mass?
A
The mass of one mole
9
Q
Mass of one mole of carbon
A
12.0 g
10
Q
Mass of one mole of water
A
18.0 g
11
Q
Number of particles equation
A
Number of particles = NA x moles
NA is avagadros constant
