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A gas mixture consists of 2 moles of oxy...

A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

A

15RT

B

9 RT

C

11 RT

D

4 RT

Text Solution

Verified by Experts

The correct Answer is:
C
` U = (f)/(2) nRT`
` U_(gamma) = U_(O_2) +U_(At)`
` U_(gamma) = (5)/(2) xx 2RT +(3)/(2) xx 4RT`
` U_(gamma ) = 11RT `
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