A sample of naphthalene (C10H8) that has a mass of 0.7200 g is burned in a bomb calorimeter. The mass of the calorimeter is 1.580 kg, and its specific heat is 2.55 J/(g • °C). As a result of the reaction, the temperature of the calorimeter increases from 22.00°C to 29.3°C. If 1 mol of naphthalene has a mass of 128.0 g, what is the molar heat of combustion of naphthalene?

Question

anonymous · Answer

what is the answer?
cam anyone help find the answer?

cuanchi · Answer

With the mass of the calorimeter and the specific heat and the change of temperature you can calculate the amount of energy (heat) absorbed by the calorimeter. You may need to use the "heat=m x C x delta T".
 This energy is going to be (positive) and equal to the energy released for the combustion but with different sign (negative).Then with that energy and the mass of naphtalente and the molecular mas you can calculate the energy for mol. This is the molar heat od combustion of naphtalene.