Gas Law problem please help

  • Thread starter ironizer
  • Start date
  • #1
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Gas Law problem.... please help

Calculate the average kinetic energies of the CH4 and N2 molecules at 294 K and 574 K.

I've tried every possible way I could think of. I can't get the right answer. I don't know what equation to use anymore, I've done it all and nothing works.

I got all these answers:

676
4.06e-21
4333.34
J/molecule 3 sig figs
And none of them are good. I'm getting annoyied, someone give me a hint please. Thanks
 

Answers and Replies

  • #2
Borek
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What equations have you tried to use?
 
  • #3
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KE= 3/2 RT

sqrt[3RT/M]

and KE=(3/2)RT/avo's number
 
  • #4
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Thank-you all for the help.


I figured it out myself.
 
  • #5
Borek
Mentor
28,806
3,301


Sorry, somehow I missed your previous answer :frown:
 

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