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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.
ETH Zurich has well over 100 student associations. [36] Most notable is the VSETH (Verband der Studierenden an der ETH) which forms the umbrella organization of all field of study specific student associations and comprises a large variety of committees such as the Student Sustainability Committee and the ETH Model United Nations. The ...
The condition that the ETH imposes on the diagonal elements of an observable is responsible for the equality of the predictions of the diagonal and microcanonical ensembles. [6] However, the equality of these long-time averages does not guarantee that the fluctuations in time around this average will be small.
Ethylene oxide is relatively stable to heating – in the absence of a catalyst, it does not dissociate up to 300 °C (572 °F), and only above 570 °C (1,058 °F) there is a major exothermic decomposition, which proceeds through the radical mechanism. [47]
In organic chemistry, an ethyl group (abbr. Et) is an alkyl substituent with the formula −CH 2 CH 3, derived from ethane (C 2 H 6). Ethyl is used in the International Union of Pure and Applied Chemistry 's nomenclature of organic chemistry for a saturated two-carbon moiety in a molecule, while the prefix " eth- " is used to indicate the ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The Swiss Federal Laboratories for Materials Science and Technology (Empa; German: Eidgenössische Materialprüfungs- und Forschungsanstalt, [2] French: Laboratoire fédéral d’essai des matériaux et de recherche, Italian: Laboratorio federale di prova dei materiali e di ricerca, Romansh: Institut federal da controlla da material e da perscrutaziun,) is a Swiss research institution for ...
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.