A propane BBQ combusts propane as shown below: C3Hg (g) + 5 02 (g) - 3 CO2 (g) + 4 H20 m) ApH = -2220 kJ/mol What mass of carbon dioxide (in g) is produced when a BBQ grill releases 121 kJ of heat to its surroundings at constant pressure? No pork roasts were cooked in the making of this question.