Hi I'm currently working on a gasification reactor. My first set of calculations are for the mass balance which has each process flow broken up into chemical compositions of H,C,O,S and N. However, there is also air flowing into the reactor, with the assumption that it is 79% N2 and 21% O2. Is there anyway I can break down the N2 and O2 to compositions of N and O for the purposes of the calculations?