# AQA GCSE Chemistry - Quantitative Chemistry Formulae

Relative Formula Mass

The Mole

Gases

Solutions

Concentration Calculations

Atom Economy

Percentage Yield

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• Created on: 18-01-20 20:47
percentage mass of an element in a compound =
(Ar x number of atoms of that element ) / (Mr of that compound) x 100
1 of 7
mass (in grams) =
number of moles (in mol) x Mr
2 of 7
volume of gas (in dm³ ) =
(mass of gas [ in grams]) / ( Mr of gas) x 24
3 of 7
concentration (in g/dm³ ) =
mass of solute (in grams) / volume of solvent (in dm³ )
4 of 7
number of moles of solute (in mol) =
concentration (in mol/dm³ ) x volume of solvent (in dm³ )
5 of 7
atom economy =
(relative formula mass of desired products) / (relative formula mass of all reactants) x 100
6 of 7
percentage yield =
(mass of product actually made [in grams]) / (maximum theoretical mass of product [in grams]) x 100
7 of 7

## Other cards in this set

### Card 2

#### Front

mass (in grams) =

#### Back

number of moles (in mol) x Mr

### Card 3

#### Front

volume of gas (in dm³ ) =

### Card 4

#### Front

concentration (in g/dm³ ) =

### Card 5

#### Front

number of moles of solute (in mol) =