Posted by **Amber** on Monday, September 29, 2008 at 3:56pm.

A 3 mg sample of an unknown ideal gas is subjected to an adiabatic and

mechanically reversible expansion from an initial pressure of 2 atmospheres to a final pressure

of 300 torr. Given that gamma

for the gas is 1.532 and that the temperature drop achieved in the

expansion is 231 K, calculate both the initial and final temperatures. Go on to determine

delta H and the molecular weight of the gaseous species if the energy lost in the expansion is

0.126 J. empirical relation

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