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I'm having a bit of trouble with 2 homework questions.

Firstly, I need to show that (Heat Capacity/Specific Heat) = 1+2f

using the fact that Cp= (1+f/2)Nk

and Cv= (f/2)Nk

I've tried to work this out by cross multiplying these, but I don't think I'm doing the maths right.

Secondly, I need to compute the entropy change for, adiabatic,isothermal,isochoric and isobaric processes. I have done the one for isothermal processes, but I can't find any clear info for the others - nb, my lecturer hasn't really covered these in any depth.

Can anyone help me with either of these ??

Thanks

Kel