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Hydrogen peroxide (H 2 O 2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy.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 configuration, and 2460 cm −1 (29.4 kJ/mol) via the cis ...
Chinese zodiac. The Chinese zodiac is a traditional classification scheme based on the Chinese calendar that assigns an animal and its reputed attributes to each year in a repeating twelve-year cycle. [1] In traditional Chinese culture, the Chinese zodiac is very important and exists as a reflection of Chinese philosophy and culture. [2]
Methylphenidate, sold under the brand names Ritalin (/ˈrɪtəlɪn/ RIT-ə-lin) and Concerta (/kənˈsɜːrtə/ kən-SUR-tə) among others, is a potent central nervous system (CNS) stimulant used medically to treat attention deficit hyperactivity disorder (ADHD) and, to a lesser extent, narcolepsy. It is a primary medication for ADHD (e.g. in ...
Flower. A flower, also known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae ). Flowers consist of a combination of vegetative organs – sepals that enclose and protect the developing flower, petals that attract pollinators, and reproductive organs that produce gametophytes ...
The Handmaid's Tale is an American dystopian television series created by Bruce Miller, based on the 1985 novel of the same name by Canadian author Margaret Atwood. The series was ordered by the streaming service Hulu as a straight-to-series order of 10 episodes, for which production began in late 2016. The plot features a dystopia following a ...
The Rookie is an American police procedural crime drama television series created by Alexi Hawley for ABC.The series follows John Nolan, a man in his forties, who becomes the oldest rookie at the Los Angeles Police Department (LAPD). The series is produced by ABC Signature and Lionsgate Television; it is based on real-life LAPD officer William Norcross, who moved to Los Angeles in 2015 and ...
