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Oxford, Cambridge and RSA Examinations [2] (OCR) is an examination board which sets examinations and awards qualifications (including GCSEs and A-levels). It is one of England, Wales and Northern Ireland's five main examination boards. OCR is based in Cambridge, with an office in Bourn, Coventry.
2-Pyrrolidone, also known as 2-pyrrolidinone or butyrolactam, is an organic compound consisting of a 5-membered lactam, making it the simplest γ-lactam. It is a colorless liquid that is miscible with water and most common organic solvents.
Apparatus with a scintillating crystal, photomultiplier, and data acquisition components. animation of radiation scintillation counter using a photomultiplier tube. When an ionizing particle passes into the scintillator material, atoms are excited along a track.
2 oz. vodka. 1 oz. elderflower liqueur (such as St. Germain) 1 oz. fresh lemon juice. Directions. For the simple syrup: In a small saucepan, whisk together the sugar and 1 cup water over medium ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
President-elect Trump mocked his ex-ally, former New Jersey Gov. Chris Christie, Saturday by seizing on the mysterious New Jersey drone controversy on his social media.
United States President-elect Donald Trump is staying true to his self-given moniker of “tariff man.”This time, he’s taking aim at some of the world’s fastest-growing major economies in ...
2,2′-Bipyridine (bipy or bpy, pronounced / ˈ b ɪ p iː /) is an organic compound with the formula (C 5 H 4 N). This colorless solid is an important isomer of the bipyridine family. It is a bidentate chelating ligand, forming complexes with many transition metals. Ruthenium and platinum complexes of bipy exhibit intense luminescence ...