You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.

Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States ...

Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K.

where x=number of monomers, usually in the thousands. It should be pointed out that when the polyethylene chain is finished growing, two Hydrogen atoms are added to 'cap' (finish) the chain ends.