Thermodynamics Homework Questions

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The discussion revolves around various thermodynamics homework questions, focusing on concepts such as extensive and intensive properties, equilibrium states, and the behavior of gas mixtures. Participants debate the classification of properties like magnetic moments and electric fields, with some confusion about the definitions of extensive versus intensive properties. The equilibrium states of a hydrogen-oxygen mixture before and after an explosion are analyzed, with differing opinions on whether these states can be considered equilibrium. Additionally, there are discussions on the applicability of classical thermodynamics to various physical properties and phenomena, including specific heat capacity and magnetic moments. Overall, the thread highlights the complexities and nuances of thermodynamic principles and their applications.
  • #31
mmmboh said:
Ok well the first one is no because thermodynamics is only concerned with macroscopic properties of matter, for the magnetude of the specific heat capacity of a solid I would say yes since "the change in the internal energy of a closed thermodynamic system is equal to the sum of the amount of heat energy supplied to or removed from the system and the work done on or by the system or we can say " In an isolated system the heat is constant"."...and specific heat capacity is the amount of heat required to raise a unit quantity of a substance one degree...I'm still not sure how to explain the magnetic dipole one, or the the relation between the pressure and temperature of electromagnetic radiation in a cavity one, or the relation between the pressure dependence of the specific heat capacity of a solid and the temperature dependence of its volume...I know PV=nRT, and if you hold pressure constant and raise the temperature then the volume will raise...I have tried looking I can't find much :S

In section "1.1 Scope of Thermodynamics" it is written that "From the principles of thermodynamics one can derive the general relations between such as coefficients of expansion,compressibilities,specific heat capacities ... The actual magnitude of quantities like those above can only be calculated on the basis of a molecular model."
 
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  • #32
bp_psy said:
In section "1.1 Scope of Thermodynamics" it is written that "From the principles of thermodynamics one can derive the general relations between such as coefficients of expansion,compressibilities,specific heat capacities ... The actual magnitude of quantities like those above can only be calculated on the basis of a molecular model."

So this means that the magnitude of the magnetic moment of a gas is also no, right? because that can only be calculated with statistical thermodynamics I think...
 
  • #33
I think you're right.
 
  • #34
I hope so, it's too bad the book does such a bad job answering the questions and he doesn't cover anything on the assignments in class :S
 

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