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From: CW%APG.PH.UCL.AC.UK@pucc.PRINCETON.EDU
Newsgroups: comp.sys.handhelds
Subject: EQ LIB Question
Message-ID: <AE0048C580003D46@gacvx2.gac.edu>
Date: 5 Apr 91 14:03:30 GMT
Lines: 29
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To: HANDHELDS@gac.edu
Via:      UK.AC.UCL.PH.APG;  5 APR 91 16:04:58 BST


     Hi,
        In the equation library ROM the specific heat for atomic oxygen
        is listed as .92 J/(g*K). A reliable source ( supposedly a man
        from HP in Switzerland) phoned me up after I had made some enquiries
        as to the meaning of this number, and told me it was the specific
        heat at constant pressure (i.e. Cp). I have just found out
        that in the J.A.N.A.F. tables the specific heat at constant
        pressure for atomic oxygen is listed as 22.74 J/K/mol. Lets
        do some conversions....

          for O 22.74 J/K/mol is equivalent to 1.421 J/(g*K).

         Hmm me thinks something not right,

          for O 0.92 J/K/mol is equivalent to 14.72 J/(K*mol).

         This is equivalent to a 35% discrepancy. This
         is rather fundamental to me since I do Atmospheric modelling
         and one of the important parameters is the specific heat
         capacity of atomic oxygen at constant pressure.

             So could a nice kind HP person reading this possibly put me
         right? I would be very grateful.

               Thanks

                  Conrad

        P.S. The J.A.N.A.F. tables come from the National Bureau of standards