Relative Masses Flashcards
1
Q
Relative atomic mass Ar
A
The weighted mean mass of an atom of an element compared with 1/12 of mass of an atom has of carbon 12
2
Q
Relative formula mass
A
The weighted mean mass of the formula unit of a compound compared with 1/12 of the mass of an atom of carbon 12
3
Q
Relative isotopic mass
A
The mass of an atom of a isotope compared 1/12 of the mass of carbon 12
4
Q
Relative molecular mass Mr
A
The weighted mean mass of a molecule of a compound compared with 1/12 of the mass of an atom of carbon 12
5
Q
Atomic number
A
Number of proton
6
Q
Mass number
A
Total number of proton and neutron
7
Q
Number of moles =
A
Concentration moldm + volume dm
8
Q
Number f particles
A
Avaagadros number x number of moles
9
Q
1 atm
A
101325 pa
10
Q
Atom economy
A
How efficient a reaction is
