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Peroxide. In chemistry, peroxides are a group of compounds with the structure R−O−O−R, where the R's represent any element and O's are single oxygen molecules. [1] [2] Oxygens are joined to each other and to adjacent elements through single covalent bonds, denoted by dashes or lines. The O−O group in a peroxide is often called the ...
Hydrogen peroxide ( H2O2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy. [9] [10] Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ / mol) for rotation between enantiomers via the trans ...
October 10, 2023 [8] Genre (s) Game creation system, massively multiplayer online. Mode (s) Single-player, multi-player. Roblox ( / ˈroʊblɒks / ROH-bloks) is an online game platform and game creation system developed by Roblox Corporation that allows users to program and play games created by themselves or other users.
v. t. e. The Oklahoma City bombing was a domestic terrorist truck bombing of the Alfred P. Murrah Federal Building in Oklahoma City, Oklahoma, United States, on April 19, 1995, the second anniversary of the end to the Waco siege. The bombing was the deadliest act of terrorism in U.S. history before the September 11 attacks in 2001, and it ...
The 82nd Airborne Division is an airborne infantry division of the United States Army specializing in parachute assault operations into hostile areas [1] with a U.S. Department of Defense mandate to be "on-call to fight any time, anywhere" at "the knife's edge of technology and readiness." [2]
Marion Robert Morrison [1] [a] (May 26, 1907 – June 11, 1979), professionally known as John Wayne and nicknamed " the Duke ", was an American actor who became a popular icon through his starring roles in films which were produced during Hollywood's Golden Age, especially in Western and war movies. His career flourished from the silent era of ...
Betelgeuse, α Ori, 58 Ori, HR 2061, BD +7°1055, HD 39801, FK5 224, HIP 27989, SAO 113271, GC 7451, CCDM J05552+0724, AAVSO 0549+07. Database references. SIMBAD. data. Betelgeuse is a red supergiant star in the constellation of Orion. It is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in its ...