1. Not finding help here? Sign up for a free 30min 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!

Ideal Gas HW Problem?

  1. Jul 2, 2013 #1
    Ideal Gas HW Problem!?

    1. The problem statement, all variables and given/known data
    "At an altitude of 11,000 meters, the air temperature is -50 degrees celsius. The air density is 0.403 kg/m^3. What is the pressure of the atmosphere at that altitude."

    2. Relevant equations
    P = P0exp(- Mgy/RT)


    3. The attempt at a solution
    I attempted to solve the problem using the above equation above equation and my result was P = 2.8 * 10^4. However my online homework is not accepting the answer and I'm not sure what I did wrong. Any help would be greatly appreciated!
     
  2. jcsd
  3. Jul 2, 2013 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

    Po is the pressure at altitude h=0, at the given temperature. I think you used the value given for T=273 K.

    Use the Ideal Gas Law instead.

    ehild
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Ideal Gas HW Problem?
  1. Ideal Gas Law Problem (Replies: 3)

  2. Ideal gas law problem (Replies: 13)

  3. Ideal gas law problem (Replies: 9)

Loading...