What happens if 0.1 mole methane reacts with 0.1 mole oxygen gas?

Lets start with the reaction of methane fully reacting with oxygen:

CH4 + 2 O2 --> CO2 + 2 H2O

The ratio CH4:O2 is 1:2

So 0.1 mole of methane can potentially react with 0.2 mole of oxygen.

Seeing as we only have 0.1 mole oxygen we know that we have excess of methane.

Because of the lack of oxygen the methane can form carbonmonoxide (CO) instead of CO2.

(if someone knows the composition of the final product, please add here. As far as i know, you cant predict the CO:CO2 ratio.)