Internal Energy Homework: Compare & Rank H2 Molecules in Containers

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Homework Help Overview

The discussion revolves around comparing the internal energies of hydrogen (H2) molecules contained in different containers at the same temperature. Participants are tasked with ranking the internal energies based on the number of molecules present in each container.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the nature of internal energy as either an intensive or extensive property, questioning how the number of molecules affects the ranking of internal energies.

Discussion Status

Some participants express confidence in a specific ranking, while others seek confirmation of their understanding and the reasoning behind their conclusions. The conversation indicates a mix of certainty and inquiry regarding the correct answer.

Contextual Notes

There is an underlying assumption about the relationship between the number of molecules and internal energy, which is being examined in the context of the problem.

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Homework Statement



Compare the Internal (or Thermal) energies of the different containers sketched below. Choose the correct ranking of the internal energies provided. Each container contains H2 molecules with the shown amount (the number of molecules) at the same temperature.

a) A=B=C=D b) A>B>C>D c) C>A>B>D d) D>B>A>C

http://img293.imageshack.us/img293/999/physicspicsa4.jpg


Homework Equations





The Attempt at a Solution



I believe the answer is D, because D has a greater amount of molecules, then it gradually decreases.
 
Last edited by a moderator:
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Sure...the question tries to make you realize whether internal energy is an intensive or an extensive quantity: have you had those concepts?
 
I just want to make sure... D is the correct answer?
 
Yes. Why the doubt?
 

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