Memorandum To: CHM 1045 Recitation Instructors Dillhyon, Martin, Callihan, Guile From: Robley Light Date: February 20, 1996 Re: Recitation 7, week of February 19 Sorry to be late in getting this out. Most of you probably already guessed what to cover. Basically some Hess's law problems, calculating þH's from þHof, heats of combustion, etc. And of course, go over the quiz. If time is left, you can work on calculations wavelength, frequency, and energy of electromagnetic radiation. (þ=c/þ; E=hþ)