What are q and w (in kJ) for the reaction of 25.0 g of Na(s) and 53.0 g of Cl2(g) to produce NaCl(s) at 1 atm and 298K?
q = ________ kJ
w = ________ kJ

The heat of combustion of liquid toluene (C7H8) is -3910.3 kJ/mol at 1 atm and 298 K.
a) What is the energy of combustion at 1 atm and 298 K?
Ecomb = _______ kJ/mol
b) What is the heat of formation of toluene?
Hf = ________ kJ/mol