A gas mixture consists of 8 moles of argon and 6 moles of oxygen at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

(1) 29 RT

(2) 20 RT

(3) 27 RT 

(4) 21 RT 

                                                              JEE-2024         

Solution:                
A gas mixture consists of 8 moles of argon and 6 moles of oxygen at temperature T. Neglecting all vibrational modes, the total internal energy of the system is (1) 29 RT (2) 20 RT (3) 27 RT (4) 21 RT JEE-2024

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