Using a sample of naphthalene (C10H8) of 2.45 grams is contaminated with a material (noncombustible). heat of combustion of naphthalene = -2.45 x 10^3 kJ/mole. the temperature raised to 2.7 degree Celsius When this sample was burned in a bomb calorimeter,. the heat capacity of the bomb calorimeter is known to be 10.6 kJ/C From previous measurements,. Now determine the mass percent of naphthalene(C10H8) in the sample?