Moles & Solutions Flashcards
1
Q
How to calculate moles from particles
A
particles divided by avagardros constant
2
Q
Definition of moles
A
amount of substance that contains the same number of particles as there are atoms in 12g of carbon-12
3
Q
Define relative atomic mass
A
average mass of 1 atom of the element relative to 1/12 the mass of 1 atom of crbon-12 (isotopes)
4
Q
triangle for moles
A
mass
molesxMr
5
Q
formulae for concentration
A
amount of substance / volume
6
Q
convert 1dm3 too cm too 1litre
A
x1000 divide by 1000
7
Q
traingle for volume
A
moles
volx conc
8
Q
method for determining conc
A
moles= volume x conc (dm3 volume)
moles is the same
conc= moles / volume
9
Q
percentage yield
A
actual yield / theortical yeid
10
Q
what is a limiting factor
A
one with lower moles
