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How would I calculate the work done by the gas molecules?

  1. Jan 7, 2016 #1
    1. The problem statement, all variables and given/known data
    Hello, I just need help figuring out how to calculate the work done by the gas molecules for my physics homework :)
    Formula given: W=Px∆V (W=work, P=pressure, and V=volume)
    What I know: So my calculated volume is 1.7x10^-22m^3.
    Pressure=0.25 A t m (atmospheric pressure)
    I just need help figuring out how I would multiply the two together.

    2. Relevant equations


    3. The attempt at a solution
    Would I change 0.25 A t m to scientific notation? So it would be 2.5x10^-1, then if I multiplied it by 1.7x10^-22m^3 it would be 4.25x10^-23 Joules of work done?
     
  2. jcsd
  3. Jan 7, 2016 #2
    To get the work in joules, it is best to convert the pressure to SI units (pascal).

    But I suspect you are wrong about the volume change.
     
  4. Jan 7, 2016 #3
    Ok, so 0.25 A t m = 25331.25 Pascal, which is 2.533125x10^4 in scientific notation. Would I then just multiply the two together? And no, I did all my calculations correct, the volume change is 1.7x10^-22m^3, I even had another person on here help me achieve that answer.
     
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