It carries the A3 road, which is maintained by the Greater London Authority. The crossing also delineates an area along the southern bank of the River Thames, between London Bridge and Tower Bridge, that has been designated as a business improvement district.he crossing also delineates an area along the southern bank of the River Thames, between London Bridge and Tower Bridge, that has been designated as a business improvement district.
Chem 1A is a first semester course in college chemistry. Topics include atomic theory, the mole concept, stoichiometry, introductory quantum theory, electronic structure, chemical bonding, molecular structure, thermochemistry, solution chemistry, intermolecular forces, equilibrium, and acid-base chemistry.opics include atomic theory, the mole concept, stoichiometry, introductory quantum theory, electronic structure, chemical bonding, molecular structure, thermochemistry, solution chemistry, intermolecular forces, equilibrium, and acid-base chemistry.
From Wikipedia, the free encyclopedia. In chemistry, a precursor is a compound that participates in the chemical reaction that produces another compound. In biochemistry, the term precursor is used more specifically to refer to a chemical compound preceding another in a metabolic pathway.aman spectroscopy has been successfully tested to detect explosives and their precursors. A portable, advanced sensor based on infrared spectroscopy in a hollow fiber matched to a silicon-micromachined fast gas chromatography column can analyze illegal stimulants and precursors with nanogram-level sensitivity.