Question

Butane C4 H10 (g),(Hf = –125.7), combusts in the presence of oxygen to form CO2 (g) (Hf = –393.5 kJ/mol), and H2 O(g) (Hf = –241.82) in the reaction:

Answer 1

We know that Butane C4H10 reacts with Oxygen O2 to form Carbon Dioxide CO2 and Water H2O according to the balanced equation for the reaction: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2OIt seems you have more follow up questions.