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Hexamethylbenzene, also known as mellitene, is a hydrocarbon with the molecular formula C 12 H 18 and the condensed structural formula C 6 (CH 3) 6. It is an aromatic compound and a derivative of benzene , where benzene's six hydrogen atoms have each been replaced by a methyl group .
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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.
For the hydrocarbons with no further unsaturation, there are four isomers. The chemical formula for all the saturated isomers is C 9 H 12 . There are three trimethylbenzenes , three ethylmetylbenzenes, and two propylbenzene isomers. 1980s American gasoline contained about 3-4% C 3 -benzenes.
In organic chemistry, two molecules are valence isomers when they are constitutional isomers that can interconvert through pericyclic reactions. [1] [2] Benzene
Kash Patel, U.S. President Donald Trump's nominee to be director of the FBI, testifies before a Senate Judiciary Committee confirmation hearing on Capitol Hill in Washington, U.S., January 30, 2025.
Alkylbenzene isomers can be differentiated by observing the position of alkyl substituents on the benzene ring using chemical ionization-proton exchange mass spectrometry. Conventional GC-MS yields limited results because the isomers have identical molecular weight and substituents.
A painting bought at a garage sale in Minnesota is a previously unknown portrait by Dutch artist Vincent Van Gogh, according to a newly published expert analysis.. It was made by Van Gogh during ...