instruction:
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.
question:
Ninhydrin forms a Schiff base with this chemical, resulting in a hue known as Ruhemanns purple. The Birch reduction takes place in a liquid substrate of it, the reason it is common in methamphetamine labs. The Kjeldahl method uses this molecule as an end-product to measure the amount of nitrogen in a sample, and it is oxidized in the first step of a nitric acid forming procedure, the Ostwald process. For 10 points, name this weak base found in fertilizers, formed by combining hydrogen and nitrogen in a three-to-one ratio in the Haber process.
answer:
Science

question:
The Soave equation adds an acentric factor to this statement, and the virial equation measures deviations from this law using a compressibility factor. This law derived by Benoit Clapeyron can account for density in its "dirty mop" form, and when A and B terms are added to account for the volume and interactions between particles, it is called van der Waals equation. Containing a namesake constant that is Boltzmann's constant times Avogadro's number is, for 10 points, what law usually stated as PV equals nRT
answer:
Science

question:
This man commanded the winning forces at the Battle of La Carbonera and the Battle of Miahuatlan. He initiated annual banquets held for his country's Rural Guard, and men like his one-time vice president Ramon Corral were among his positivist cientificos. This drafter of the Plan de Tuxtepec forced Sebastian Lerdo into exile after the Battle of Tecoac. His critics attacked him for abandoning the Constitution of (*) 1857. In his first presidential campaign, he opposed re-election, but when he succeeded Manuel Gonzalez as President he removed all restrictions on re-election. He was ultimately forced to resign by Francisco Madero. For 10 points, name this dictator who ruled Mexico almost continuously from 1876 until 1911.
answer:
History