The heat of atomization of methane and ethane are 360kJ/moo and 620kJ/mol, respectively.
The longest wavelength of light capable of breaking the C-C bond is (Avogadro number = 6.02 x 1023, h= 6.62 x 1034J s
E = hν = hc/λ
The Attempt at a Solution
I think we should consider energy of ethane only as it only has C-C bond.
What is the use of methane energy?