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Homework Help: 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
    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.
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