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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

`4 RT`

B

`15 RT`

C

`9 RT`

D

`11 RT`

Text Solution

Verified by Experts

The correct Answer is:
D
`U = U_(O_(2)) + U_(Ar)`
`= 2 xx (5)/(2)RT + 4 xx (3)/(2)RT = 11 RT`
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