hydrogen attack
71SN2 reaction — The SN2 reaction (also known as bimolecular nucleophilic substitution) is a type of nucleophilic substitution, where a lone pair from a nucleophile attacks an electron deficient electrophilic center and bonds to it, expelling another group called …
72Andromeda Ascendant — Infobox Fictional Spacecraft name = Andromeda Ascendant caption = The Andromeda Ascendant first = Under the Night last = The Heart of The Journey cause = class = Glorious Heritage armaments = AP Cannons Point defense lasers Smart missiles Smart… …
73Serine protease — Serine Peptidase Crystal structure of bovine chymotrypsin. The catalytic residues are shown as yellow sticks. Rendered from PDB 1CBW. Identifiers …
74lipid — /lip id, luy pid/, n. Biochem. any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with… …
75Space Shuttle — STS redirects here. For other uses, see STS (disambiguation). This article is about the NASA Space Transportation System vehicle. For the associated NASA STS program, see Space Shuttle program. For other shuttles and aerospace vehicles, see… …
76Natalie Portman — Portman at the premiere of Black Swan during the 2010 Toronto International Film Festival Born Natalie Hershlag (Hebrew: נטלי הרשלג) …
77Operation Crossroads — Coordinates: 11°36′N 165°30′E / 11.6°N 165.5°E / 11.6; 165.5 …
78Strategic Defense Initiative — Organization SDIO Agency overview Formed 1984 Dissolved 1993 (renamed) Superseding a …
79Sodium hydroxide — Sodium hydroxide …
80submarine — n. /sub meuh reen , sub meuh reen /; adj., v. /sub meuh reen /, n., adj., v., submarined, submarining. n. 1. a vessel that can be submerged and navigated under water, usually built for warfare and armed with torpedoes or guided missiles. 2.… …
