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Degrees of freedom, equipartition of energy, specific heats of gases

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A gas mixture consists of 2 moles of O_2 and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is : Answer: 3. 11 RT Key idea: internal energy U=f/2nRT . O₂ is diatomic ( f=5 , vibration neglected): U=5/2×2RT=5RT . Ar is monatomic ( f=3 ):... Degrees of freedom, equipartition of energy, specific heats of gases 1 answer