NEET 2017 Physics question
A gas mixture consists of 2 moles of and 4 moles of Ar at temperature . Neglecting all vibrational modes, the total internal energy of the system is
Answer: (4)
Solution
Internal energy of an ideal gas is , where is the number of degrees of freedom. is diatomic: with vibrations neglected (3 translational + 2 rotational). Ar is
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