When you mix sulfur (S) and oxygen (O), you can get several different compounds, depending on the conditions and the relative amounts of each element. Here are a few examples:

* Sulfur Dioxide (SO₂) : This is the most common compound formed when sulfur burns in air. It's a colorless gas with a pungent odor.

* Sulfur Trioxide (SO₃) : This compound forms when sulfur dioxide reacts further with oxygen. It's also a colorless gas but is highly reactive.

* Sulfur Monoxide (SO) : This is a less stable compound that can form at high temperatures. It's a colorless gas with a short lifespan.

The specific compound you get depends on factors like:

* Temperature: Higher temperatures favor the formation of sulfur trioxide.

* Pressure: Higher pressure also favors the formation of sulfur trioxide.

* Presence of a catalyst: Catalysts can accelerate the reaction and influence the final product.

Remember that these are just a few examples, and other sulfur oxides exist.