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[tex]\sqrt{\frac{2\gamma RT}{(\gamma-1)M}} [/tex]

(irodov's problem 2.42)

This leads to the result that every mole of leaking gas has an energy of

[tex]\frac{\gamma RT}{(\gamma-1)} [/tex]

whereas we know the energy contained in 1 mole of gas is

[tex]\frac{RT}{(\gamma-1)} [/tex]

From where is this difference of energy coming out.

Thanks for helping!!