A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature ‘T’. Neglecting all vibrational mode, the total internal energy of the system is

# A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature ‘T’. Neglecting all vibrational mode, the total internal energy of the system is

1. A

4RT

2. B

15RT

3. C

9RT

4. D

11RT

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### Solution:

Total Internal Energy of System =${U}_{\text{oxygen}}+{U}_{\text{argon}}$

Therefore, the correct answer is (D).

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