Ok so I attempted these problems but I just dnt get it, if someone would clarify it It would clear soo much up!
The heat of combustion for solid urea (NH2)2CO to CO2, N2,and H20(liquid) is -632.2KJ per mole.
1. Write a balances eaution for the reaction (but how do you do it if its for combustion)?
2. How much heat is given off per mole oxygen, just how do you solve for that?
3. Calculate the standard heat of urea using ref table, what are you doing, hess's law?