1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Need help on a Chem Question

  1. Oct 16, 2006 #1
    Question: A sample of hydrogen gas, collected at 100 C and 1.0 atm., has a volume of 350 ml (0.350 lit.). What will be the pressure after it is transferred to a 4.0 lit. flask and cooled to 25 C? (temp must be in degrees of Kelvin)

    I had assumed using the formula V2 = P1 X V1 / P2 but i am not getting anything that makes sense. I think its two formulas needed but am not sure. Any assistance would be greatly apperciated
  2. jcsd
  3. Oct 16, 2006 #2
    Go to your favorite search engine and type in "combined gas law".

    Think that will help.

    Best of health.

  4. Oct 16, 2006 #3
    [tex] pV = nRT [/tex]. Look at the values given. Which ones are being kept constant?
  5. Oct 16, 2006 #4
    Thanks! That did the trick alright :biggrin:
  6. Oct 16, 2006 #5
    Can someone verify this is correct?

    P1V1/T1 = P2V2/T2
    (1.0atm)(.35lit)/(373K) = P(4.0lit)/(298K)
    (104.3) = (1492)P
    .070atm = P
  7. Oct 16, 2006 #6
    thats correct
  8. Oct 16, 2006 #7
    thanks! just making sure :)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Need help on a Chem Question
  1. Need help with A-Chem (Replies: 1)