Root mean square speed

  • Thread starter omni
  • Start date
  • #1
192
1
i asked to find the root mean square speed of Methane in temperature of 50 degrees Celsius.

so i have an dilemma which formula i need to use, so in the picture you can see the 2 formula that i have doubts.



thanks.
 

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  • #2
1,137
0
1 i guess
what is the 2nd one for
 
  • #3
192
1
well 2 is T= temperature and M=Molar mass.
i also think is 1 but i wasen't sure.

by the way what R mean in the 1 formula ?

thank you.
 
  • #4
1,137
0
its universal Gas constant
 
  • #5
242
0
equation 1 is correct if T = temperature (in kelvins), R = the gas constant, and M= the molar mass.

I cannot see how formula 2 is meaningful. it certainly does not have the units of velocity.
 
  • #6
192
1
ok i think i will try to keep on from here thanks to both of you. :)
 
  • #7
192
1
ok this what i got can you just tell me if i did it correct ?


thanks.
 

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  • #8
242
0
the physics looks good. i cannot verify that you have the correct molar mass, but i assume you looked it up in a reputable source. :)

cheers
 
  • #9
192
1
well the molar mass CH4 16.0426.
 
  • #10
192
1
and sure thanks for helping :)
 
  • #11
242
0
cheers
 

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