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Homework Help: Finding the Pressure inside a lighter

  1. May 11, 2012 #1
    1. The problem statement, all variables and given/known data
    I need to do an experiment to verify the gas constant R and I can only use a lighter. The equation useful is PV=nRT but I don't know how I can find the pressure inside the lighter. Any help is appreciated! :D

    2. Relevant equations

    I don't know what other equation might be used other than PV=nRT
  2. jcsd
  3. May 14, 2012 #2
    You may be able to use combined gas law to solve this. Does you experimental design allow for the construction of a manometer?
  4. May 15, 2012 #3


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    Staff: Mentor

    There is no need to measure the pressure inside the lighter. Besides, it won't help, as the gas inside is in a liquid form, so it doesn't obey the ideal gas law.
  5. May 15, 2012 #4
    Yeah that's right, but I found a way to do it so it's all good now :)
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