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ehrenfest
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Homework Statement
http://ocw.mit.edu/NR/rdonlyres/Physics/8-044Spring-2004/7A20B047-A049-44D6-96D2-75602F179856/0/notes_dfnitns.pdf
There it says tht the number of independent variables of a simple fluid is 2 (see the "Complete Specification" section). But the ideal gas law is PV=NkT which has 4 variables, so why are there not 3 independent variables for an ideal gas which is an example of a simple fluid?
Homework Equations
The Attempt at a Solution
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