The heat absorbed by the water and by the rest of the calorimeter must be calculated separately and then added together. An alternative approach to bomb calorimetric is to establish the heat capacity of the calorimeter, exclusive of the water it contains. A 1.148 -g sample of benzoic acid is burned in excess in a bomb immersed in 1181 g of water. In a second experiment, a 0.895-g powdered coal sample is burned in the same calorimeter assembly. The temperature of the water rises from 24.96 to 30.25C. The heat of combustion of benzoic acid is -26.42 kj/g. The temperature of 1162 g water rises from 24.98 to29.81C.
Determine the numbers of metric tons of this coal would have to be burned to release2.45×109 kj of heat?