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.
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Question: 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.

Answer: Science

Question: One character in this novel, Adele Ratignolle, urges the protagonist to care for her children above all else. Another character in this novel, the piano playing Mademoiselle Reitz helps the protagonist sort of her feelings for another character, who has left Grand Isle for Mexico. Despite being married to her husband Leonce, the protagonist of this novel develops romantic feelings for Alcee Arobin and Robert Lebrun before drowning herself by walking into the Gulf of Mexico. For 10 points, identify this novel about Edna Pontellier by Kate Chopin.

Answer: Literature

Question: One island belonging to this nation is Cheduba which is known for peculiar mud-shaped cones which emit sulfurous fumes or steam. A massive gold-covered stupa is found in this nation's capital while the central region of this nation is home to thousands of temples built by the (*) Bagan Dynasty. To the north lies the state of Kachin which is home to Lake Indawygi and this nation's highest peak, Hkakabo Razi, while the Mon state lies to the nation's south. Major rivers found within this country include the Salween which flows southerly along the east side of the nation into the Andaman Sea and the Chindwin which forms a major tributary with the nation's largest river, the Irrawaddy. Bordering China and Thailand to the east and India and Bangladesh to the west, FTP, identify this Southeast Asian nation, home to the city of Mandalay and its capital, Yangon.

Answer:
Social Science