Results are out! Find what you Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post


Announcements Posted on
Talking about ISA/EMPA specifics is against our guidelines - read more here 05-03-2015
  1. Offline

    An ideal gas occupies a volume of 2.5 dm3 at a pressure of 0.3 MPa. If the gas is compressed isothermally by a constant external pressure, Pext, so that the final volume is 0.5 dm3, what is the smallest value that the external pressure can have? [2 marks]

    How much work has been done on the gas? [4 marks]

    I can do the first part easy enough, just the question about work i'm struggling with. I don't really know how to work it out. If anyone could point me in the right direction that would be great.
  2. Offline

    Work done expanding or compressing a gas is pdV. Substitute in p=NkT/V (from the ideal gas law) and integrate from the initial volume to the final volume.


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: April 1, 2012
2015 general election
New on TSR

Loved by Students

Our big survey results unveiled

Article updates
  • 0 new posts
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.