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Topic: enthalpy  (Read 5820 times)

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Offline shekharbadam

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enthalpy
« on: February 08, 2009, 10:02:49 AM »
hi, could you tell me how to calculate the enthalpy of N2H4 (hydrazine) from nitrogen and hydrogen gases?
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Offline Hello12

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Re: enthalpy
« Reply #1 on: February 09, 2009, 12:32:06 PM »
N2+2H2>>>>>N2H4. You need to find the delta H value for N2H4, 2H2 and N2. Then just apply Hess Law. So delta Hx= delta H1 (N2)+ 2delta H2(2H2)- delta H3(N2H4)
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