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Question
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
Options
A.4 RT
B.15 RT
C.9 RT
D.11 RT
Solution
Internal energy of n moles of an ideal gas at temperature T is given by
U = n
Where, f = degree of freedom
= 5 for O2 and 3 for Ar
Hence, U = UQ2 + UAr = 2
= 11RT
U = n
Where, f = degree of freedom
= 5 for O2 and 3 for Ar
Hence, U = UQ2 + UAr = 2
= 11RT Create a free account to view solution
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