The units for solubility express a concentration&colon; mass per volume (mg/mL), molarity (mol/L), etc. Examples include molarity, volume fraction, and mole fraction. Add microliter amounts of high molarity HCl to lower the pH to 8. "Molarity"'s central character is Jim Mole, a student everyman. At higher temperatures, the molarity of the saturated solution decreases and the density increases. Units do not necessarily imply anything about molarity or mass. The standard solution is a reference guide to discover the molarity of unknown species. The resulting molarity matrix of the batch, N, is given here. A volume-based measure like molarity would be inadvisable. "Molarity" is also said to be a portmanteau of "Molinelli" with "hilarity". The Molarity Model considers the constraints of cell size. This increases the effective molarity of the intermediate and allows an assembly line-like process. Years later, in "Molarity Redux", Jim is a tweed-clad Notre Dame professor. Molarity&colon; On the Road to Selling Out Juniper Press (Notre Dame, Indiana), 1980. "Molarity" first began in "The Observer", Notre Dame's student newspaper, in 1977.