# about the unit of the standard state enthalpy!!

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 March 24, 2004, 21:51 about the unit of the standard state enthalpy!! #1 KEVIN Guest   Posts: n/a Hello! Everyone , now i simulate a chemical reaction between gas(nh3) and porous solid(cacl2),but i met a problem in defining the material property. In the fluent, the unit of the standard state state enthalpy and standard state entropy is j/kgmol and j/kgmol.k,respectively. But i search the unit of the stand state enthalpy and standard state entropy is j/mol and j/mol.k respectively. Who can tell me how to switch between these two units? Thank you very much!

 March 25, 2004, 04:51 Re: about the unit of the standard state enthalpy! #2 thomas Guest   Posts: n/a Hi, simply kgmol = 1000 mol. means j/kgmol = 10e-3 j/mol. Good luck ! sadjad.s and soheil_r7 like this.

 March 25, 2004, 05:07 Re: about the unit of the standard state enthalpy! #3 KEVIN Guest   Posts: n/a Thank you very much!thomas

 March 25, 2004, 08:32 Re: about the unit of the standard state enthalpy! #4 kevin Guest   Posts: n/a Hello! Everyone ,I met the problem about the Arrhenius Rate --1.How to get the Pre-Exponential Factor --2.How to calculate the Activation Energy --3.How to calculate Temperature Exponent PS:I simulate the chemical reaction between the gas(nh3) and solid(cacl2) Thank you very much!!!!