dyfugikholjp
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A molecule Q is ionised By electron impact in A TOF mass spectrometer the Q+ ion Has a kinetic energy of 2.09 x 10-15 J.This ion takes 1.23 x 10-5 s to reach the detector The length of the flight tube is 1.50 m
Calculate the relative molecular mass of Q
K.E. = 1/2 m v2
Where the mass=mass(kg) and v=speed (m s -1 )
The avagardo constant L =6.022x1023 mol-1
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dyfugikholjp
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this is iy
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Joinedup
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what are you confused about? what have you tried?

do you understand how a TOF mass spectrometer works?
can you calculate the mass of the ion in SI units (kg)?
can you convert from kg to grams?
do you understand that 'relative atomic mass' means 'mass expressed in atomic mass units
can you convert between g and amu (using Avogadro's constant)?
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