You burn 136.8 mg of naphthalene in a calorimeter and the temperature of the calorimeter rises by 3.29 oC. Determine the calorimeter heat capacity in J K-1. The molar mass of naphthalene is 128.18 g mol-1 This is a question from a quiz I have to do. this is wat I did. Ccal=delta H/delta n=0.1368g/128.18g/mol =1.06E-3moles I dont know how to calc delta H from this info but I looked it up on the net and found 72.6+0.6kJ/mol. Thats not right is it coz when I put this information in the formula Ccal=((72.6+0.6)x1000j/molx1.06E-3)/(3.29+273.15) I got it wrong... any help??? Does anyone know if my value for entropy of napthalene is right?