Thermodynamics question 1

[Faiz iqbal]

Cv = 20.785
Cp = 29.100

Can you please calculate the enthalpy change and internal energy change for the process. In my book the same problem is done with the other path. The problem is the final values just don't match. Please help.

 

[LittleInch]

To make it easier for those to answer, insert the image..

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Faiz iqbal]

Thanks for doing it on my behalf. I am new to this website so didn't know any better.

 

[MortenA]

although it does look like a school propblem (and for your reference not allowed on these pages...)

--- Best regards, Morten Andersen

 

[pierreick]

Hi ,
Relations to apply :
Delta H= Delta U +P Delta V
Delta H =H final- H initial = (H final - H intermediate) +(H intermediate- H initial)
Just perform the calculation following the equations above and pay attention to the units .

H enthalpy, U internal energy ,V volume

https://www.omnicalculator.com/physics/enthalpy

Good luck
Pierre

 

[LittleInch]

Your post will be deleted because of that[Edit - it was a sheer abusive post which has removed], but you haven't exactly given us much to go on really.

This is an engineering forum for engineering professionals. It's not a free tutoring service I'm afraid.

You may want to reflect and delete your last post. Just some friendly advise.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[chicopee]

First Faiz Iqbal, you have to tell us about the medium, then get a Mollier diagram about that medium. That Mollier diagram will allow you to calculate the enthalpy and internal energy change. You can then compare those results with the book answers.
Another point is your attitude about the responders. If you worked for me, I would fire you would as you seem to have a temper.
Remember one cause that terminates employees from their job is due to their inability to get along in their work place.