Finding the Root Mean Square Speed of Methane at 50°C

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Homework Help Overview

The original poster seeks to find the root mean square speed of methane at a temperature of 50 degrees Celsius, expressing uncertainty about which formula to use for the calculation.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss two formulas related to the calculation, with questions about the variables involved, such as the meaning of R in one formula and the relevance of the second formula. There is also an inquiry about the molar mass of methane.

Discussion Status

Some participants have provided clarifications regarding the formulas and constants involved, while others express their intent to continue working on the problem based on the discussion. There is no explicit consensus on the best approach yet.

Contextual Notes

Participants are navigating the definitions and units associated with the formulas, and there is mention of the need for the temperature to be in Kelvin for one of the equations. The original poster has also indicated a reliance on reputable sources for the molar mass of methane.

omni
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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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1 i guess
what is the 2nd one for
 
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.
 
its universal Gas constant
 
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.
 
ok i think i will try to keep on from here thanks to both of you. :)
 
ok this what i got can you just tell me if i did it correct ?


thanks.
 

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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
 
well the molar mass CH4 16.0426.
 
  • #10
and sure thanks for helping :)
 
  • #11
cheers
 

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