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Thermodynamics- rms translational kinetic energy

  • Thread starter yaykey428
  • Start date
  • #1
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Homework Statement


A container having a volume of 1m^3 holds 5 moles of helium gas at 50C. If the helium behaves like an ideal gas, the rms translational kinetic energy is?

Homework Equations


Total E= 3/2 nRT


The Attempt at a Solution


I tried solving this question using this equation, but I did not get the right answer.
The correct answer is 6.7 x 10^-21 J
 

Answers and Replies

  • #2
ehild
Homework Helper
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Welcome to PF!

Please, show your work.


ehild
 
  • #3
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Total Ek= 3/2 nRT
= 3/2 x 5 x 8.314 x 323
= 20140.7J, but this answer is wrong
 
  • #4
vela
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The problem is asking for the energy per atom.
 

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