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Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [2] and released to the public in January 2007. [3] Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4]
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 pronoun one is an exception, as in I like those ones.) English pronouns are also more limited than common nouns in their ability to take dependents. For instance, while common nouns can often be preceded by a determinative (e.g., the car), pronouns cannot. [7] In English conversation, pronouns are roughly as frequent as other nouns.
The English pronouns form a relatively small category of words in Modern English whose primary semantic function is that of a pro-form for a noun phrase. [1] Traditional grammars consider them to be a distinct part of speech, while most modern grammars see them as a subcategory of noun, contrasting with common and proper nouns.
The IUPAC nomenclature is a system of naming chemical compounds and for describing the science of chemistry in general. It is maintained by the International Union of Pure and Applied Chemistry. the Blue Book [45] [46] and the Red Book: [47] the two publications containing the rules for naming organic and inorganic compounds. [48]
Interrogative pronouns in Australian Aboriginal languages are a diverse set of lexical items with functions extending far beyond simply the formation of questions (though this is one of their uses). These pronominal stems are sometimes called ignoratives or epistememes because their broader function is to convey differing degrees of perceptual ...
In linguistics, an impersonal verb is one that has no determinate subject. For example, in the sentence "It rains", rain is an impersonal verb and the pronoun it corresponds to an exophoric referrent. In many languages the verb takes a third person singular inflection and often appears with an expletive subject.
This is because English grammar requires that the verb and its subject agree in person. The pronouns I and he are first and third person respectively, as are the verb forms am and is. The verb form must be selected so that it has the same person as the subject in contrast to notional agreement, which is based on meaning. [2] [3]