potential acidity
121pH — a logarithmic measure used to state the acidity or alkalinity of a chemical solution. The properties of a liquid solution we call acid are caused by the presence of hydrogen ions (H+). The pH of a solution is a measure of the concentration of… …
122Microbicides for sexually transmitted diseases — Tenofovir Systematic (IUPAC) name {(2R) 1 (6 amino 9H purin 9 yl)propan 2 yl]oxy}methyl)phosphonic acid Clinical data Pregnancy cat …
123Sea-buckthorn — Common Sea buckthorn shrub in The Netherlands Scientific classification Kingdom …
124cañada — /keuhn yah deuh, yad euh/, n. Chiefly Western U.S. 1. a dry riverbed. 2. a small, deep canyon. [1840 50; < Sp, equiv. to cañ(a) CANE + ada n. suffix] * * * Canada Introduction Canada Background: A land of vast distances and rich natural resources …
125Canada — /kan euh deuh/, n. a nation in N North America: a member of the Commonwealth of Nations. 29,123,194; 3,690,410 sq. mi. (9,558,160 sq. km). Cap.: Ottawa. * * * Canada Introduction Canada Background: A land of vast distances and rich natural… …
126hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …
127Titration — [ frame|Titration setup: the titrant drops from the burette into the analyte solution in the flask. An indicator present then changes color permanently at the endpoint.] Titration is a common laboratory method of quantitative chemical analysis… …
128Cyanotoxin — Green scum produced by and containing cyanobacteria, washed up on a rock in California during an algal bloom Cyanotoxins are toxins produced by bacteria called cyanobacteria (also known as blue green algae). Cyanobacteria are found almost… …
