In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Q: An approximation of it named for Russell uses the TDS value to determine one of its parameters via the Langelier approximation, while one constant that appears in it has units of moles per kilogram to the one half power, according the Bates-Guggenheim convention. Along with Guggenheim, Scatchard and Bronsted improved upon this model by developing the SIT theory, and that model has a better fit than a modification of it named for Davies. This relationship assumes the existence of only long-range interactions, and it was extended to account for Brownian motion by Lars Onsager. It assumes that the solvent is structure-less and that the solution is dilute, and the theory behind it implies that the electrostatic potential falls off exponentially when r is greater than the atomic radius due to screening by counter ions. For 10 points, identify this equation which is used to calculate the activity coefficients, and is named for a German and a Dutch scientist.

A: Science
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Q: Hans-Georg Gadamer argued that the ideal described in this work is heuristic in nature in an essay about this work's author "and the poets. " Books six and seven of this work assert that knowledge is ultimately for the Good, which shines on intelligible essences like the sun. It asserts that love is "a tyrant" over man, and compares imaginative, real, intelligent, and abstract levels of thought to a line divided into four segments. In its first book, Thrasymachus describes justice as "the advantage of the stronger," while its seventh book likens people unaware of Forms to humans viewing shadows on the wall of a cave. For 10 points, name this Platonic dialogue that describes an ideal society.

A: Social Science
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Q: This musician died in 1976 in seclusion at the New Jersey estate of Pannonica de Koenigswarter, his patron, after whom he named one of his songs. He was house pianist at Minton's in Harlem in the early 1940s, where he greatly influenced the playing of Bud Powell. Known for his odd habit of getting up and doing a shuffling dance when moved by his or his sidemen's playing, his studio album Brilliant Corners gave a boost to John Coltrane's career. FTP name this composer of "'Round Midnight" and subject of the film Straight, No Chaser.

A:
Fine Arts
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