Ranking internal energy of H2 gas with different molecule counts

[Linzy]

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.

 

[borgwal]

Sure...the question tries to make you realize whether internal energy is an intensive or an extensive quantity: have you had those concepts?

 

[Linzy]

I just want to make sure... D is the correct answer?

 

[borgwal]

Yes. Why the doubt?