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Enthalpy of the decomposition reaction of N2H4 gas

  1. Jan 28, 2013 #1
    I am trying to determine the change of heat for:

    N2H4(g) -> N2(g) + 2H2(g)

    Here is what I did and what I got the correct answer is -86.0 which I am clearly not getting

    [(163)+ (2*436)] - [(4*391) + (163)] = -692

    thanks for any help!
     
  2. jcsd
  3. Jan 28, 2013 #2
    Where have all these numbers come from?
     
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