Amount of substance - Key Questions AQA Chem AS

Hey guys 

These are some questions on the basics of the topic 'amount of substance' 

I am going to be making these revision flashcard thingies for all the other topics of unit 1 chemistry. 

I hope they will be of use to you 

Please comment and rate 

Thanks :)

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Define avagadro's constant
The number of particles in 1 mole
1 of 9
How would you work out the mass if you know the values for mol and Mr?
Do mass = mol x Mr
2 of 9
Define empirical formula
The simplest whole number ratio of atoms of each element in a compound.
3 of 9
Define the molecular formula
The actual number of atoms of each element in a compound
4 of 9
State the ideal gas equation
pV=nRT
5 of 9
When using the ideal gas equation what unit should pressure be in?
Pa or Pascales
6 of 9
When using the ideal gas equation how would I convert a volume in cm3 to be in the correct unit?
You would times cm3 by 10 to the power -6 and the unit would be m3
7 of 9
What is the equation for percentage atom economy?
(mass of desired product) / (total mass of reactants) x 100
8 of 9
How would I work out percentage yield?
(mass of product) / (theoretical yield) x 100
9 of 9

Other cards in this set

Card 2

Front

How would you work out the mass if you know the values for mol and Mr?

Back

Do mass = mol x Mr

Card 3

Front

Define empirical formula

Back

Preview of the front of card 3

Card 4

Front

Define the molecular formula

Back

Preview of the front of card 4

Card 5

Front

State the ideal gas equation

Back

Preview of the front of card 5
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