Results 11 to 20 of about 390,003 (343)
The Historical Development of the Words “Dissociation” and “Ionization” in Chemistry
Revista Debates em Ensino de Química, 2023 The words "dissociation" and "ionization" are sources of misconceptions in chemistry teaching, mainly in the subjects of acids and bases, chemical equilibrium and solutions. In the present article, the historical development of the two words was analyzed.
Giovanni Miraveti Carriello +2 more
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Frontiers in Marine Science, 2022 We investigated the pore fluid and methane-derived authigenic carbonate (MDAC) chemistry from the ARAON Mounds in the Chukchi Sea to reveal how methane (CH4) seepage impacts their compositional and isotopic properties.
Ji-Hoon Kim +15 more
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TEACHING OF THE THEORY OF ELECTROLYTIC DISSOCIATION IN HIGH SCHOOL CHEMISTRY [PDF]
School Science and Mathematics, 1921 Wm. H. Brown
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A pain-causing and paralytic ant venom glycopeptide
iScience, 2021 Summary: Ants (Hymenoptera: Formicidae) are familiar inhabitants of most terrestrial environments. Although we are aware of the ability of many species to sting, knowledge of ant venom chemistry remains limited.
Samuel D. Robinson +14 more
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Migration of Salt Ions in Frozen Hydrate-Saturated Sediments: Temperature and Chemistry Constraints
Geosciences, 2022 Migration of dissolved salts from natural (cryopeg brines, seawater, etc.), or artificial sources can destabilize intrapermafrost gas hydrates. Salt transport patterns vary as a function of gas pressure, temperature, salinity, etc. The sensitivity of the
Evgeny Chuvilin +5 more
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On basis set optimisation in quantum chemistry [PDF]
ESAIM: Proceedings and Surveys, 2023 In this article, we propose general criteria to construct optimal atomic centered basis sets in quantum chemistry. We focus in particular on two criteria, one based on the ground-state one-body density matrix of the system and the other based on the ...
Cancès Eric +3 more
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MODELLING OF ACIDS AND BASES REVISITED
Studia Universitatis Babes-Bolyai Chemia, 2022 Models for dissociation and mixing of acids and bases are the main subject of many analytical chemistry textbooks. Preparing the solutions for any titration generally involves diluting acids and bases. The mathematics behind precise calculation of pH and
Lorentz JÄNTSCHI
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Dissociation Chemistry of Hydrogen-Deficient Radical Peptide Anions [PDF]
Journal of the American Society for Mass Spectrometry, 2011 The fragmentation chemistry of anionic deprotonated hydrogen-deficient radical peptides is investigated. Homolytic photodissociation of carbon-iodine bonds with 266 nm light is used to generate the radical species, which are subsequently subjected to collisional activation to induce further dissociation.
Moore, Benjamin +6 more
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Liquids, 2023 This work focuses on determining the dissociation constants (pKa) of eight amines, namely, 3-(Diethylamino) propylamine, 1,3-Diaminopentane, 3-Butoxypropylamine, 2-(Methylamino) ethanol, Bis(2-methoxyethyl) amine, α-Methylbenzylamine, 2-Aminoheptane, and
Venkata Sai Priyatham Varma Alluri +2 more
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Communications Physics, 2023 The study of molecular valence electron dynamics and their coupling with nuclear motion is one of the frontiers of ultrafast physics and ultrafast chemistry. With time-resolved strong-field ion momentum spectroscopy, we study electron valence and nucleus
Xinning Zhao +15 more
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