The complete combustion of salicylic acid releases 21.90 kJ ofenergy per gram of salicylic acid. In a particular bomb calorimeter(initially at room temperature), the combustion of 0.2370 g ofsalicylic acid, in the presence of excess oxygen, causes thetemperature of the calorimeter to rise by 2.82 °C. When a0.2252-g sample of an unknown organic substance is similarly burnedin the same calorimeter, the temperature rises by 3.46 °C. What is the energy of combustion per unit mass of the unknownsubstance?