Im competely lost!! HELP! ME UNDERSTAND!
Ocatane, C8H18 is a desirable component of gasoline. Octane burns cleanly and prevent engine knocking in automobiles. The thermochemical equation showing the combustions of octane is shown below.
C8H18(L)+25/2 O2(g)--> 8CO2(g)+ 9H2O(g)
then is says: triangle thing H = -5472kJ
1. What is the heat reaction for the combustion of octane in Kcal/mol ? (4.184 J= 1cal)
2.Before octane combusts, what type of energy is present in the system?
3. After octane combusts, what type of energy is present in the system?
Im so lost! Any info on this prob would be wonderful!!!!
2007-01-30 15:05:09 · 3 answers · asked by Tracey Lee ♥ 2 in Science & Mathematics ➔ Chemistry
part 1: -5472/4.184*2
Part 2 Chemical potenial energy
Part 3 Thermal energy and Kinetic energy,
Hope that helps
2007-01-30 15:16:34 · answer #1 · answered by Anonymous · 0⤊ 0⤋
1) in Kcal/mol it is -5472/4.184 = 1307.84
2) Chemical
3) Heat
2007-01-30 23:15:27 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋
I dont know but "triangle thing" is DELTA
2007-01-30 23:10:39 · answer #3 · answered by Me 3 · 0⤊ 0⤋