| 单词 | stoichiometric |
| 例句 | Traditionally, stoichiometric variations of the phytoplankton and within the marine ecosystem were considered to have a relatively minor impact on marine biogeochemistry and, consequently, atmospheric CO2 levels. What phytoplankton physiology has to do with global climate 2023-10-13T04:00:00Z If the reaction takes place in an electrochemical cell, the current flow is conveniently measured, and it may be used to assist in stoichiometric calculations related to the cell reaction. Chemistry 2019-02-14T00:00:00Z Thus there is a 1:3 stoichiometric ratio between Fe and PF6. A low-spin Fe(iii) complex with 100-ps ligand-to-metal charge transfer photoluminescence : Nature : Nature Research 2017-03-28T04:00:00Z The second key axis for how a CEO or leader drives value in an organization picks a descriptive metaphor from reaction kinetics, and the difference between stoichiometric and catalytic processes: Biotech CEOs: Observations In Thermodynamics And Kinetics 2015-03-16T04:00:00Z The laser generates a specific wavelength of light that is absorbed in a stoichiometric fashion by glucose molecules – the more glucose molecules; the more photons are absorbed. 25.8 Million Diabetes Patients Need What Grove Instruments Is Developing 2013-07-25T13:14:00Z Here, we deal with adsorption and other colloidal phenomena, rather than with ordinary stoichiometric combinations. The Chemistry of Plant Life Since the provided amount of KClO3 is less than the stoichiometric amount, it is the limiting reactant and may be used to compute the enthalpy change: Chemistry 2019-02-14T00:00:00Z Stas, in his stoichiometric researches, prepared chemically pure bromine from potassium bromide, by converting it into the bromate which was purified by repeated crystallization. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" They are by definition more strategically inclined than stoichiometric CEOs. Biotech CEOs: Observations In Thermodynamics And Kinetics 2015-03-16T04:00:00Z The glowed substance is weighed after cooling, and is pyrophosphate of magnesia, from which the magnesia or carbonate of magnesia is calculated stoichiometrically. Scientific American Supplement, No. 821, September 26, 1891 This volume represents a stoichiometric excess of titrant, and a reaction solution containing both the titration product, acetate ion, and the excess strong titrant. Chemistry 2019-02-14T00:00:00Z Avogadro’s law may be used in stoichiometric computations for chemical reactions involving gaseous reactants or products. Chemistry 2019-02-14T00:00:00Z The equation in this case is easily balanced by inspection, requiring stoichiometric coefficients of 2 for the NaCl and Na: Chemistry 2019-02-14T00:00:00Z The coefficients in the balanced equation are used to derive stoichiometric factors that permit computation of the desired quantity. Chemistry 2019-02-14T00:00:00Z The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. Chemistry 2019-02-14T00:00:00Z All the exercises of the preceding module involved stoichiometric amounts of reactants. Chemistry 2019-02-14T00:00:00Z This may be represented in an abbreviated format by omitting the units of the stoichiometric factor: Chemistry 2019-02-14T00:00:00Z The balanced equation shows the hydrogen and chlorine react in a 1:1 stoichiometric ratio. Chemistry 2019-02-14T00:00:00Z The mass increase of each device corresponds to the mass of the absorbed product and may be used in an appropriate stoichiometric calculation to derive the mass of the relevant element. Chemistry 2019-02-14T00:00:00Z Coefficients from the equation are used to derive stoichiometric factors that subsequently may be used for computations relating reactant and product masses, molar amounts, and other quantitative properties. Chemistry 2019-02-14T00:00:00Z This is usually rearranged slightly to be written as follows, with ∑ representing “the sum of” and n standing for the stoichiometric coefficients: Chemistry 2019-02-14T00:00:00Z Changing the stoichiometric coefficients in an equation by some factor x results in an exponential change in the equilibrium constant by that same factor: Chemistry 2019-02-14T00:00:00Z In order to prepare solid sulfite and hydrogen sulfite salts, it is necessary to add a stoichiometric amount of a base to a sulfurous acid solution and then evaporate the water. Chemistry 2019-02-14T00:00:00Z In this module, the use of balanced chemical equations for various stoichiometric applications is explored. Chemistry 2019-02-14T00:00:00Z The general approach to using stoichiometric relationships is similar in concept to the way people go about many common activities. Chemistry 2019-02-14T00:00:00Z Using this stoichiometric factor, the provided molar amount of propane, and Avogadro’s number, Chemistry 2019-02-14T00:00:00Z The first example involves a strong acid titration that requires only stoichiometric calculations to derive the solution pH. Chemistry 2019-02-14T00:00:00Z Regardless of the details, all these calculations share a common essential component: the use of stoichiometric factors derived from balanced chemical equations. Chemistry 2019-02-14T00:00:00Z In this module, more realistic situations are considered, in which reactants are not present in stoichiometric amounts. Chemistry 2019-02-14T00:00:00Z Identifying the limiting and excess reactants for a given situation requires computing the molar amounts of each reactant provided and comparing them to the stoichiometric amounts represented in the balanced chemical equation. Chemistry 2019-02-14T00:00:00Z Perform stoichiometric calculations using typical titration and gravimetric data. Chemistry 2019-02-14T00:00:00Z This volume represents one-half of the stoichiometric amount of titrant, and so one-half of the acetic acid has been neutralized to yield an equivalent amount of acetate ion. Chemistry 2019-02-14T00:00:00Z The mass of the precipitate may then be used, along with relevant stoichiometric relationships, to calculate analyte concentration. Chemistry 2019-02-14T00:00:00Z Relations between different rate expressions for a given reaction are derived directly from the stoichiometric coefficients of the equation representing the reaction. Chemistry 2019-02-14T00:00:00Z |
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