Bomb Calorimetry

Good Evening to whomstever is helping me with this aching assignment(:
I honestly tried doing this lab but I gave up, I never understood this lesson in chemistry class. Anywho this is from my lab. Values were given to us, and Im not sure you can tell. But in pencil, I was only able to solve the differences lol. There is a video that goes alon with this but it was really no help when I watched, but ill add it here just in case if needed, https://studentlaccd-my.sharepoint.com/:f:/g/personal/milligja_laccd_edu/ErRKqv-vrpVLlS44UtvMbxMBAM1nrP64LcN5HGOA2IzhwA?e=BZvGvD

But yes, the directions are right forward, I just cant solve anything with my 3 brain cells.