Question: A vapour at 22 atm and 5C was allowed to expand adiabatically to a final pressure of 1:00 atm; the temperature fell by 10 K.

A vapour at 22 atm and 5°C was allowed to expand adiabatically to a final pressure of 1:00 atm; the temperature fell by 10 K. Calculate the Joule- Thomson coefficient, u, at 5°C, assuming it remains constant over this temperature range.

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