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18-Crown-6 can be synthesized by the Williamson ether synthesis using potassium ion as the template cation. Structure of nickel-aquo nitrate complex of the ligand derived from the templated trimerization of 2-aminobenzaldehyde. [5] The phosphorus analogue of an aza crown can be prepared by a template reaction. [6]
Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
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E. Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures; Encyclopaedia of the Social Sciences; Encyclopedia of Analytical Chemistry
Simple English; Slovenčina; ... Print/export Download as PDF; Printable version; In other projects ... Template:Periodic table legend ...
Simple English; Slovenčina ... Download as PDF; Printable version; In other projects Wikimedia Commons; ... Computational chemistry (8 C, 153 P) E. Electrochemistry ...
Römpp's Chemistry Lexicon (German Römpp Lexikon Chemie) is a chemical encyclopedia from Germany. Started by chemistry teacher Hermann Römpp in 1947 it has evolved to the leading chemical encyclopedia in German language. Römpp's Chemistry Lexicon contains around 64,000 entries and 215,000 links. [1]
It can be a printed page that a child completes with a writing instrument. No other materials are needed. In education, a worksheet may have questions for students and places to record answers. In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations.