When butane burns in an excess of oxygen, the principle products are carbon dioxide and water.
This is a form of hydrocarbon which belongs to the alkane family. It has four carbon atoms and a single bond.
The reaction of butane and excess oxygen can be seen below:
2C₄H₁₀ + 13O₂ ⇒ 8CO₂ + 10H₂O
Therefore the products are carbon dioxide and water.
Read more about Butane here https://brainly.com/question/6328164
#SPJ2