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1,1,2-Trichloroethane, vinyl trichloride or 1,1,2-TCA, is an organochloride solvent with the molecular formula C 2 H 3 Cl 3 and the structural formula CH 2 Cl—CHCl 2. It is a colourless, sweet-smelling liquid that does not dissolve in water, but is soluble in most organic solvents. It is an isomer of 1,1,1-trichloroethane, and a byproduct of ...
The structure of the fuchsin dye. The Schiff test is an early organic chemistry named reaction developed by Hugo Schiff, [1] and is a relatively general chemical test for detection of many organic aldehydes that has also found use in the staining of biological tissues. [2] The Schiff reagent is the reaction product of a dye formulation such as ...
UNIQUAC. In statistical thermodynamics, UNIQUAC (a portmanteau of uni versal qua si c hemical) is an activity coefficient model used in description of phase equilibria. [1] [2] The model is a so-called lattice model and has been derived from a first order approximation of interacting molecule surfaces.
A two-tailed test applied to the normal distribution. A one-tailed test, showing the p -value as the size of one tail. In statistical significance testing, a one-tailed test and a two-tailed test are alternative ways of computing the statistical significance of a parameter inferred from a data set, in terms of a test statistic.
Betteridge's law of headlines is an adage that states: "Any headline that ends in a question mark can be answered by the word no ." It is named after Ian Betteridge, a British technology journalist who wrote about it in 2009, although the principle is much older. [1] [2] It is based on the assumption that if the publishers were confident that ...
Interstellar. (film) Interstellar is a 2014 epic science fiction drama film directed by Christopher Nolan, who co-wrote it with his brother Jonathan. It stars Matthew McConaughey, Anne Hathaway, Jessica Chastain, Bill Irwin, Ellen Burstyn, Michael Caine, and Matt Damon.
In linguistics, a yes–no question, also known as a binary question, a polar question, or a general question, [1] is a question whose expected answer is one of two choices, one that provides an affirmative answer to the question versus one that provides a negative answer to the question. Typically, in English, the choices are either "yes" or ...
Technology integration. Technology integration is defined as the use of technology to enhance and support the educational environment. Technology integration in the classroom can also support classroom instruction by creating opportunities for students to complete assignments on the computer rather than with normal pencil and paper. [1]