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Homework Help: Ideal gas laws question Help

  1. Oct 22, 2013 #1
    Ideal gas laws question.. Help!!

    1. The problem statement, all variables and given/known data

    Volume of 150cm^3 of an ideal gas has an initial temp. Of 20 degrees celcius and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 100cm^3 and the temp is raised to 40 degrees celcius.

    2. Relevant equations

    Pi x Vi / Ti = Pf x Vf / Tf

    3. The attempt at a solution

    1 atm x 150 cm^3 / 293 K = P x 100cm^3 / 313 K.
    I keep getting 1.6, this answer is incorrect. I'm pretty sure my units are mixed up but I'm not sure what I need to fix. Any help would be great!! Thanks
  2. jcsd
  3. Oct 22, 2013 #2
    You really don't need to fix any units in this particular calculation. It looks like your answer is correct, unless you are required to give the answer as 1.6 atm.

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