1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Temperature/Ideal Gas Law

  1. May 10, 2005 #1
    I'm kinda stuck with these problems... can somebody plz help?
    1) What is the average distance between nitrogen molecules at STP?
    I know that at STP: T=273K, P=1atm=1.013 x 10^5 N/m^2. How would I start solving this proble?

    2) The lowest pressure attainable using the best available vacuum techniques is about 10^-12 N/m^2. At such a pressure, how many molecules are there per cm^3 at 0 degree Celsius?
    I think you use the Ideal Gas Law: PV=NkT but then how would u get the amount of molecules?
  2. jcsd
  3. May 10, 2005 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    1. Do you know an equation that relates some property of the gas to the set of conditions {T,P} ?

    2. What do the different terms in the equation refer to ?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook