Finding Vrms given pressure, density and Temperature

  • Thread starter sckeen1988
  • Start date
  • #1
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Homework Statement


At 273K and .01 atm, the density of a gas is 1.24*10^-5 g/cm^3. Find the Vrms for the gas molecules.


Homework Equations



Vrms=sqrt(3RT/M) Density=m/V

The Attempt at a Solution



I tried to relate the density given to the molar mass or the number of moles somehow, but failed completely.
 

Answers and Replies

  • #2
diazona
Homework Helper
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Use the ideal gas law (assuming it is an ideal gas).
 
  • #3
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How can I get volume from that?
 
  • #4
turin
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Hint: does the answer really depend on the volume? E.g., if you find the solution for 1 cubic meter of this gas, will you find a different solution for, say, 2 cubic meters, if all of the other given properties are the same?
 
  • #5
15
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Thanks alot for your help.
 
  • #6
1
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pls enlighten me on how you re-solve this. I don't understand on ohw do you use ideal gas law to resolve this.
 

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