A student has calibrated his/her calorimeter and finds the heat capacity to be 15.6 J/°C. S/he then determines the molar heat capacity of aluminum. The data are: 24.1 g Al at 100.0°C are put into the calorimeter, which contains 99.6 g H2O at 19.7°C. The final temperature comes to 23.5°C. Calculate the heat capacity of Al in J/mol·°C.