So now I have Ethane, which has a molecular formula c, two H six. Now, I can continue doing this to produce propane, butane pentane, hexane, heptane, octane and so on. Now, butane for example, is another type of alkane that's composed of four carbon atoms. So I essentially took four of these molecules, I combined them and I got the following butane molecule. Now, another type of alkane are cycloalkanes. These are simply cyclic versions of their alkanes.