thermal dissociation
71Activity (chemistry) — In chemical thermodynamics, activity (symbol a) is a measure of the “effective concentration” of a species in a mixture, meaning that the species chemical potential depends on the activity of a real solution in the same way that it would depend… …
72Tonsillectomy — A tonsillectomy is a surgical procedure in which the tonsils are removed. Sometimes the adenoids are removed at the same time.Reasons for tonsillectomyTonsillectomy may be indicated when the patient: * Experiences frequent bouts of acute… …
73Sulfuric acid — Sulfuric acid …
74Carbon nanotubes in photovoltaics — Organic photovoltaic devices (OPVs) are fabricated from thin films of organic semiconductors, such as polymers and small molecule compounds, and are typically on the order of 100 nm thick. Because polymer based OPVs can be made using a coating… …
75Gas — This article is about the physical properties of gas as a state of matter. For the uses of gases, and other meanings, see Gas (disambiguation). Ga …
76Saturne VI — Titan (lune) Pour les articles homonymes, voir Titan. Titan Titan vu par la sonde Cassini …
77Saturni Luna — Titan (lune) Pour les articles homonymes, voir Titan. Titan Titan vu par la sonde Cassini …
78Titan (lune) — Pour les articles homonymes, voir Titan. Titan Titan vu par la sonde Cassini …
79Properties of water — H2O and HOH redirect here. For other uses, see H2O (disambiguation) and HOH (disambiguation). This article is about the physical and chemical properties of pure water. For general discussion and its distribution and importance in life, see Water …
80chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
