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Dimethylmercury is an extremely toxic organomercury compound with the formula (CH 3) 2 Hg. A volatile, flammable, dense and colorless liquid, dimethylmercury is one of the strongest known neurotoxins. Less than 0.1 mL is capable of inducing severe mercury poisoning resulting in death. [2]
Boron carbide was discovered in the 19th century as a by-product of reactions involving metal borides, but its chemical formula was unknown. It was not until the 1930s that the chemical composition was estimated as B 4 C. [4] Controversy remained as to whether or not the material had this exact 4:1 stoichiometry, as, in practice the material is always slightly carbon-deficient with regard to ...
The above general equation can be also used for any other solar altitude. The NOAA provides additional approximate expressions for refraction corrections at these other altitudes. [1] There are also alternative formulations, such as a non-piecewise expression by G.G. Bennett used in the U.S. Naval Observatory's "Vector Astronomy Software". [2]
5 c 6 h 5 ch 3 + 6 kmno 4 + 9 h 2 so 4 → 5 c 6 h 5 cooh + 14 h 2 o + 3 k 2 so 4 + 6 mnso 4 Glycols and polyols are highly reactive toward KMnO 4 . For example, addition of potassium permanganate to an aqueous solution of sugar and sodium hydroxide produces the chemical chameleon reaction, which involves dramatic color changes associated with ...
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Named "Gordian" by the Free University of Berlin, analysed by them to have deepened below 940 hPa. [341] 924 [342] 2006, 10 December 62° N, 37° W: Named "Xynthia" by the Free University of Berlin, who estimated central pressure below 930 hPa. [343] 928 [344] 2007, 12 December 928 [345] 2009, 23 January Between Iceland and Scotland
Dadra and Nagar Haveli is a district of the union territory of Dadra and Nagar Haveli and Daman and Diu in western India.It is composed of two separate geographical entities: Nagar Haveli, wedged in between Maharashtra and Gujarat states 1 kilometre (0.62 mi) to the north-west, and the smaller enclave of Dadra, which is surrounded by Gujarat.