Apparent contradiction between specific heat ( i.e internal energy, in this case) and average kinetic energy (i.e temp). For ex- if i take two gases [He] and [Xe] then xenon have more specific heat capacity than helium, So in other words, at equal volume, pressure and no.of moles, [Xe] has more "internal energy" than [He], and acc.to Avogadro's law or PV=nRT they should have same temperature too ! But how can both have same temperature, pressure and volume when [Xe] clearly has more internal energy ?
Or is it possible for two gases to have different internal energy but same pressure and temperature, if no.of moles/molecules and Volume is equal ? If so then why ? I can't seem to find any reason or intuition for this !
Any help is appreciated !