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Homework Help: Comparing Molecules of Gases

  1. Jan 21, 2009 #1
    1. The problem statement, all variables and given/known data
    What volume of CH4 at 0°C and 1.00 atm contains the same number of molecules as 0.58 L of N2 measured at 35.0 °C and 1.50 atm?


    2. Relevant equations
    I think you just need to use Avogadro's Number and multiply by the molar mass?
    I guess my question is what equation would you use?

    3. The attempt at a solution
    I haven't attempted the question due to lack of an equation.
     
  2. jcsd
  3. Jan 21, 2009 #2

    mgb_phys

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    You are probably looking for PV = nRT
     
  4. Jan 21, 2009 #3
    thank you. i was trying that formula but was plugging in the wrong number for moles.
     
  5. Jan 21, 2009 #4

    mgb_phys

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    Remember you are doing the ratio of two of these, so you don't actualy need a value for R
     
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