December 05, 2021, 09:50:35 AM
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Topic: Calculating Change in Enthalpy via Equation Manipulation  (Read 319 times)

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Offline novalia

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Calculating Change in Enthalpy via Equation Manipulation
« on: November 21, 2021, 05:23:43 PM »
I can't seem to wrap my head around this today. Any tips, insight, or otherwise appreciated. Please let me know if you can see the image.

Offline Borek

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Re: Calculating Change in Enthalpy via Equation Manipulation
« Reply #1 on: November 22, 2021, 02:43:35 AM »
Image is there, but small and barely readable.

Per forum rules you have to show your attempts at answering the question/solving the problem to receive help. But I will give you a hint: reverse the second equation.
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Offline Orcio_Dojek

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Re: Calculating Change in Enthalpy via Equation Manipulation
« Reply #2 on: November 22, 2021, 10:25:23 AM »
Quote
I can't seem to wrap my head around this today. Any tips, insight, or otherwise appreciated. Please let me know if you can see the image.
Add equations altogether to get the desired one (N2O + NO2 ---> 3 NO).

Offline novalia

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Re: Calculating Change in Enthalpy via Equation Manipulation
« Reply #3 on: November 30, 2021, 07:26:19 PM »
Image is there, but small and barely readable.

Per forum rules you have to show your attempts at answering the question/solving the problem to receive help. But I will give you a hint: reverse the second equation.

Hi, thanks for the hint. I reversed the second equation and multiplied by .5, and I multiplied the third equation by .5 as well. I got +155.65 kJ as the ΔH.

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