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Bromine water, Br 2. Bromine water is an oxidizing, intense brown mixture containing diatomic bromine (Br 2) dissolved in water (H 2 O). [1] It is often used as a reactive in chemical assays of recognition for substances which react with bromine in an aqueous environment with the halogenation mechanism, mainly unsaturated carbon compounds (carbon compounds with 1 or more double or triple bond(s)).
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
Binge drinking is defined as the amount of alcohol it takes to raise a person’s blood-alcohol concentration level to 0.08, the legal definition of being intoxicated in most states.
but de facto age was still 18 until 1995 due to a sale loophole. 1995: De facto age raised to 21 in 1995 when loophole was closed. [44] 1996: In 1996, briefly lowered by Louisiana Supreme Court to 18 until it reversed its decision, raising to 21 three months later. [45] Other exceptions still remain. [46] 21 (Exceptions to state law include): [47]
Levels of even less than 0.1% can cause intoxication, with unconsciousness often occurring at 0.3–0.4%. [17] Death from ethanol consumption is possible when blood alcohol levels reach 0.4%. A blood level of 0.5% or more is commonly fatal. The oral median lethal dose (LD 50) of ethanol in rats is 5,628 mg/kg. Directly translated to human ...
The more unsaturated an unknown is, the more bromine it reacts with, and the less coloured the solution will appear. [ 1 ] Should the brown colour not disappear, possibly due to the presence of an alkene which doesn't react, or reacts very slowly with, bromine, the potassium permanganate test should be performed, in order to determine the ...
“The test result showed Chaney’s blood alcohol level to be .33,” Taylor told WKRG. “The legal limit in Alabama for a person operating a commercial vehicle, or bus, in Alabama is .02.”
Research into the possibilities of using breath to test for alcohol in a person's body dates as far back as 1874, when Francis E. Anstie made the observation that small amounts of alcohol were excreted in breath. [3] In 1927, Emil Bogen produced a paper on breath analysis.