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Energy req'd to compress a gas?

  1. Dec 17, 2008 #1
    Hi, I am trying to figure out how much energy would be required to compress air from 100ml
    volume to 50ml, and also to 25ml volume.....

    A nudge in the right direction would be great!

    Thank you! :)
  2. jcsd
  3. Dec 17, 2008 #2

    Vanadium 50

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    Work is force times distance. Pressure is force per unit area. Pressure times volume of a gas is a constant. Enough of a nudge?
  4. Dec 20, 2008 #3
    So if the volume were initially 100 ml and the pressure is 14.7 psi then when compressed to 1/2 the volume, would the pressure then be 14.7 * 2 = 29.4 psi?
  5. Dec 20, 2008 #4
    The answer will liie between two extremesThe minimum energy is when the gas is compressed isothermally [infinitely slowly ]and the maximum when it is compressed adiabatically[infinitely rapidly].
  6. Dec 21, 2008 #5
    Could you explain isothermally and adiabatically?
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