|MadSci Network: Engineering|
in order to sensibly answer your questions I would probably have to write a few dozen pages.
I think it makes more sense if you look up those topics either in a good book or in the web resource I found (University of Pittsburgh) at http://granul ar.che.pitt.edu/~mccarthy/che1011/outline.html. They cover both heat and mass transfer on this web page.
If you have more specific questions you are of course welcome to ask them again!
Try the links in the MadSci Library for more information on Engineering.