John Cleese to Star in a British Sitcom for First Time in Nearly 40 Years. 11 April 2017 3:34 AM, -08:00 | Variety - TV News. The new Will & Grace TV series will extend to 12 episodes. 5 April 2017 9:30 PM, -08:00 | The Hollywood News.
Analytical chemists determine the structure, composition, and nature of substances by examining and identifying their various elements or compounds. They also study the relationships and interactions among the parts of compounds.
1 Physical organic chemistry â the study of the interrelationships between structure and reactivity in organic molecules.  Stereochemistry â the study of the spatial arrangements of atoms in molecules and their effects on the chemical and physical properties of substances.