Amount of substance - equations Flashcards
1
Q
One mole of a substance =
A
6.02 x 10^23 particles
Its Ar or Mr in grams
2
Q
Number of moles =
A
mass / mr
3
Q
Number of particles =
A
moles x Avogadro’s constant
4
Q
Valency of a metal =
A
group number
5
Q
Valency of a non-metal =
A
8 - group number
6
Q
% substance =
A
(Mr of substance/Mr of whole compound) x 100
7
Q
% uncertainty =
A
(overall uncertainty/measurement) x 100
8
Q
% yield =
A
(actual yield/theoretical yield) x 100
9
Q
% atom economy =
A
(Mr of desired product/Mr of reactants) x 100
10
Q
Pressure x volume =
A
moles x gas constant x temperature
11
Q
Gas constant =
A
8.31 J K-1 mol-1
12
Q
Concentration =
A
(moles x 1000)/volume
13
Q
Avagadro’s constant =
mass, mr
A
Mr/mass
