Google radical reactions. Specifically, the initiation propagation and termination of such reactions. Also, you will need an understanding of the stability of 3°, 2°, 1°, and methyl free radicals.
Best of luck
The reaction are free radicals what are the product...
1)CH3-CH2-CH2 +CH3-CH2CH3
2)CH3-CH2-CH3 +CH3-CH-CH3
3)CH3-CH2-CH2 +CH3-CH-CH3
4)H+H
2 answers
There are multiple products for a couple of the reactions shown. There is something called a hydride shift, which can cause a couple of the reactions that you have to have more than one product. Which is why I advised you to perform a search concerning the stability of carbocations.