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One mole of an ideal gas with gamma=1.4,...

One mole of an ideal gas with `gamma`=1.4, is adiabatically compressed so that its temperature rises from `27^@C` to `35^@C`. The change in the internal energy of the gas is (R = 8.3J/mol.K)

A

-166 J

B

166 J

C

-168 J

D

168 J

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta U= -DeltaW= (R)/(gamma-1)[T_2-T_1]= (8.3)/((1.4-1)) [308-300] ` = 166 J.
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