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what is the definition of relative atomic mass?
average mass of 1 atom of an element relative to 1/12th the mass of 1 atom of carbon 12
what is the definition of relative isotopic mass?
the mass of an atom on an isotope relative to 1/12th the mass of 1 atom of carbon 12
what is the definition of relative formula mass?
average mass of a molecule relative to 1/12th the mass of 1 atom of carbon 12
what are the steps of the mass spectrometer?
vaporisation - the sample is heated and turned into a gas before entering the mass spectrometer
ionisation - the gaseous sample is bombarded by hight energy electrons to form positive ions
acceleration - the positive ions are accelerated through an electric field
some ions pass through a slit and are detected by the detector
how to calculate the relative formula mass (Mr)?
add up the Ar from each atom
what’s equation for moles?
mass
number of moles | Mr
what is the equation for avogadros constant?
number of particles (N)
number of moles (n) | avogadros constant (NA)
what is the equation for volume of gas?
volume of gas’s (dm3)
moles of gas | molar volume (dm3) (22.4dm3 or 24.5dm3)
what is the ideal gas equation?
PV=nRT
p - pressure (Pa)
v - volume (m3)
n - amount of gas molecules mol
r - ideal gas constant
t - temperature (k)
what is the equation for atom economy?
atom economy
mass of product | total mass of reactants
what is the equation for % yield?
mass of product obtained
%yield | maximum theoretical yield
Note 
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