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Il y a 1 jour · The H–I bond dissociation energy is likewise the smallest of the hydrogen halides, at 295 kJ/mol. Aqueous hydrogen iodide is known as hydroiodic acid , which is a strong acid. Hydrogen iodide is exceptionally soluble in water: one litre of water will dissolve 425 litres of hydrogen iodide, and the saturated solution has only four water molecules per molecule of hydrogen iodide. [49]
Il y a 1 jour · To help compare different orders of magnitude this section lists lengths between 10 −11 and 10 −10 m (10 pm and 100 pm). 25 pm – approximate radius of a helium atom, the smallest neutral atom. 30.8568 pm – 1 rontoparsec. 50 pm – radius of a hydrogen atom. 50 pm – bohr radius: approximate radius of a hydrogen atom.
Il y a 1 jour · Chemistry. Nicotine is a hygroscopic, colorless to yellow-brown, oily liquid, that is readily soluble in alcohol, ether or light petroleum. It is miscible with water in its neutral amine base form between 60 °C and 210 °C. It is a dibasic nitrogenous base, having K b1 =1×10 −6, K b2 =1×10 −11. [161]
Il y a 1 jour · B. hydrogen bond C. nucleotide D. sugar-phosphate backbone In DNA and RNA, a nitrogenous base, sugar, and phosphate groups together are called a nucleotide. Score .9932
