1. Limited time only! Sign up for a free 30min personal 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!

A cylinder containing hydrogen gas

  1. Dec 6, 2009 #1
    1. The problem statement, all variables and given/known data

    A cylinder contains 270 L of hydrogen gas (H2 at 0.0 C) and a pressure of 10 atm. How much energy is required to raise the temperature of this gas to 31°C? (answer needs to be kJ)

    2. Relevant equations
    PV =nRT
    and
    Q= MCT



    3. The attempt at a solution
    PV = nRT==> M= .12061 kg
    Q = MC T
    (.12061)(.014304) (31) ====> also tried using kelvins instead of celsius for temp...neither has worked
     
  2. jcsd
  3. Dec 6, 2009 #2
    hydrogen gas is diatomic.
     
  4. Dec 6, 2009 #3
    sorry, i don't know what that means. Terrible at physics...
     
  5. Dec 6, 2009 #4
    The MW of H2= 2 gms so your mass is off by a factor of 2 as well.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook