Two fuel samples were combusted using the same calorimeter. When 0.5402 g of the first fuel was burned, the temperature of the calorimeter increased by 1.57 degrees Celsius. When 0.3263 g of the second fuel was burned, the temperature increase was 1.23 degrees Celsius. The chemical energy of the first sample was 23.6 kJ/g. Calculate the chemical energy of the second fuel sample.