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!

B Heat transferred into a closed system

  1. May 6, 2016 #1
    So i am making a simple demonstration of ideal gas law using a cylinder piston system, heating the system so the piston is pushed up, i wanted to calculate the heat transferred into the system, will it be Cp(Tf-Ti) or Cp(Tf-Ti)+ work done by the system ?
     
  2. jcsd
  3. May 6, 2016 #2
    Using the first law of thermodynamics, how would you answer this question?
     
  4. May 6, 2016 #3
    well using the first law Q-W=ΔU, Q will equal to to ΔU+ W but i dont know how to calculate ΔU
     
  5. May 6, 2016 #4
    For one mole of an ideal gas, ##\Delta U =C_v(T_f-T_i)##. Now what?
     
  6. May 6, 2016 #5
    why use Cv not Cp the system has constant pressure and variable volume
     
  7. May 6, 2016 #6
    The internal energy of an ideal gas is (a) a function of temperature only or (b) a function of temperature and volume (per unit mass)?

    For constant pressure, what is the amount of work that is done?
     
    Last edited: May 6, 2016
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: Heat transferred into a closed system
  1. Heat Transfer (Replies: 2)

  2. Heat Transfer (Replies: 3)

  3. Heat transfer (Replies: 4)

  4. Heat Transfer (Replies: 4)

Loading...