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

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

A

5RT

B

9RT

C

11RT

D

15RT

Text Solution

Verified by Experts

The correct Answer is:
C
Internal energy of one mole of a monoatomic gas (like Argon) is `3/2RT` and internal energy of one mole of a diatomic gas like oxygen is `5/2RT`
`therefore` Total internal energy of the mixture
`=2xx5/2RT+4xx3/2RT=11RT`
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MARVEL PUBLICATION-KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION-TEST YOUR GRASP - 9
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