Entropy and temperature of the system

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SUMMARY

The discussion focuses on deriving the entropy of a system within the microcanonical ensemble, specifically using the formula W = N!/(n!(N-n)!)*3^n, where N represents the total number of molecules and n denotes the number of molecules in an orthostate. Participants highlight the confusion regarding the definition of entropy, emphasizing that it should be expressed in terms of the number of states (S) rather than as a numerical value (W). The correct formulation of entropy is k_b*log(S), which is crucial for understanding the system's thermodynamic properties.

PREREQUISITES
  • Understanding of microcanonical ensemble principles
  • Familiarity with statistical mechanics terminology
  • Knowledge of entropy and its physical significance
  • Basic grasp of combinatorial mathematics
NEXT STEPS
  • Study the derivation of entropy in statistical mechanics
  • Learn about the microcanonical ensemble and its applications
  • Explore the relationship between entropy and temperature in thermodynamic systems
  • Investigate the implications of k_b (Boltzmann's constant) in entropy calculations
USEFUL FOR

This discussion is beneficial for physics students, researchers in statistical mechanics, and anyone interested in the foundational concepts of thermodynamics and entropy calculations.

PeterPoPS
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Homework Statement


... Show that the entropy of the system in the microcanonical ensemble is

[tex]W = \frac{N!}{n!(N-n)!}3^n[/tex]

and obtain an expression for the temperature of the system. ...
N = number of molecules
n = number of molecules in orthostate

Homework Equations




The Attempt at a Solution


This question makes no sense, right? Because it says the entropy is W which is just a number, and entropy is in the units Joule/Kelvin
 
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It should probably be reworded. But entropy is defined as k_b*log(S) where S is the number of states corresponding to a given macroscopic state. The interesting quantity in the entropy is S and it looks like that's what they want you to find.
 

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