1. The problem statement, all variables and given/known data 1.Hibernation is a state of regulated hypothermia, lasting several days or weeks, that allows animals to conserve energy during the winter, During hibernation animals slow their metabolism to a very low level, with body temperature and breathing rates lowered, gradually using up the body fat reserves stored during warmer months. The heat required to sustain animals that hibernate comes from the combustion of fatty acids, one ofwhich is arachidonic acid, a 20 –carbon omega-6 fatty acid: C20H32O2 (s) Calculate the mass of arachidonic acid needed to warm a 500.0 kg bear from 5 to 250C Assume that the average heat capacity of bear flesh is 4.18 J/g-deg ∆H0f (C20H32O2 (s) ) = -636 kJ/mol ; ∆H0f (CO2 (g) )= -393.5 kJ/mol ; ∆H0f(H2O (l) ) = -285.8 kJ/mol 2. Relevant equations Q=mc∆T Heats of formation 3. The attempt at a solution well the i found the amount of heat lost by the arachidonic acid needed to warm the bear which was -41800 KJ and i found the ∆H for the combustion of arachidonic acid using hess' law, which i got -43.3 KJ/mol but thing is i have to idea what to do with these two pieces of information, help anyone?