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20/09/2020 1:45 pm
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Molecules of an ideal gas are known to have three translational degrees of freedom. The gas is maintained at a temperature of T. The total internal energy, U of a mole of this gas, and the value of γ = (Cp/Cv) are given, respectively, by :
(1) U = 5/2 RT and γ = 6/5
(2) U = 5RT and γ = 7/5
(3) U = 5RT and γ = 6/5
(4) U = 5/2 RT and γ = 7/5
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20/09/2020 1:46 pm
(4) U = 5/2 RT and γ = 7/5
Explanation:
f = 5
γ = 1 + 2/f = 1 + 2/5 = 7/5
Cp/Cv = 7/5