Why doesn't it like my expressions?

[ptc-4423720]

I don't understand why it doesn't like my ∆H expressions (the one that use heat capacity). I'm talking about ∆Hethanol(T), ∆Hethylene(T) and ∆Hwater(T). From there I think I can figure out what's wrong with the rest of it, just need to know one to know the rest. It doesn't come up as red until you enter the = sign.

Also, do I need to do a solve block before ∆Greaction(T,P,e) to get it to graph? I just can't tell because of the errors.

[wayne]

Some of the functions are not defined, put a couple of artificial ones in

[ptc-4423720]

Thanks for catching some inconsistencies. But my problem was evaluating the ∆H expressions. Anyone know?

[wayne · Accepted solution]

Sorry, missed that.

The expressions do work, just not in line. Evaluate next to the expression. Sometimes this happens.

By the way, they are not actually functions of T, T is inside the integrals, which have fixed limits.

[ptc-4423720]

Fantastic!!! thanks so much!