C4 Flashcards
1
Q
Mr
A
Relative formula mass ( for e.g. CO2 = 44 )
2
Q
Ar
A
Relative atomic mass ( e.g. carbon = 12 )
3
Q
How to calculate the amount of moles in a given mass and the mass of each substance
A
Moles= mass / Mr Mass= moles * Mr
4
Q
What is percentage yield?
A
Actual mass produced / theoretical mass produced * 100
5
Q
Calculate the atom economy
A
Atom economy = Mr of what it asks for / Mr of the other thing * 100
6
Q
Cm3 to dm3
A
Cm3/1000
7
Q
Concentration in mol/dm3
A
N = c x v /1000
8
Q
Calculate concentration but with g/dm3
A
conc (g/dm3) = conc (mol/dm3) x Mr
9
Q
Volume of gases in g/dm3
A
24 X Moles
