Q.
The internal energy of gases He, O2 and NH3 are plotted against the absolute temperature. The respective graphs 1, 2 and 3 are of
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a
He, O2 and NH3
b
NH3, H2 and O2
c
NH3, O2 and He
d
O2, He and NH3
answer is A.
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Detailed Solution
The internal energy U=f2RT and fNH3>fO2>fHe where f is degrees of freedom
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