1. The problem statement, all variables and given/known data I want to find a relationship between the number of moles of O2 used and the number of CH2 units in an alkane in a complete combustion reaction. 2. Relevant equations 3. The attempt at a solution Right now I have come up with a math equation, given X units of CH2, to find the number of O2 moles. I used patterns to find the equation, is there any other relationship? The more units of CH2 you have, the more O2 you need to combust it right?