AS Chemistry

Equations which need to know for AQA AS Chemistry 

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Chemistry Equations
Relative Atomic Mass =
average mass of an
element
1/12 the mass of an atom of C12
Relative Molecular Mass =
average mass of an
element
1/12 the mass of an atom of C12
Ionic Compound Formula =
average mass of a formula
unit
1/12 the mass of an atom of C12
(a) Number of moles =
Mass/Mr
(b) Mr = Mass/ Number of
moles
(c) Mass = Mr x Number of
moles
(1) Molarity = Number of
moles/Volume
(2) Volume = Number of moles/Molarity
(3) Number of moles = Volume x Molarity
The Ideal Gas Equation
pV = nRT
P - Pressure (Pa)
V - Volume (M3)
cm/1'000'000=M3
N - Number of moles of Gas
= Mass/Mr or Mass/Ar(for
noble gases)

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R - Gas constant 8.…read more

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