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]: One of this god's possessions changes from a Madjet to a Semektet daily, and this ancestor of all nine members of the Ennead was sometimes symbolized by the Bennu phoenix. This figure mixed some red beer and used it to pacify a bloodthirsty Sekhmet. This god was cured of a snakebite by Isis after he gave her the (*) secret name hidden in his body. Akhenaten replaced this deity's syncretization with the worship of Aten, and one of his epithets, Horakhty, means "Horus of the Horizons". This god rides a solar barque each night and had a center of worship at Heliopolis. For ten points, name this falcon-headed Egyptian god of the Sun.
[A]: Social Science

[Q]: This equation's accuracy can be improved if used in conjunction with Lorentz-Hudson-McCoubrey combining rules for modeling interactions between unlike molecules. The trace of fluid-solid coexistence curves can be performed by utilizing Kofke's method for this equation's associated integration. This relation can serve as a test for consistency for the Hubbard approximation if the external magnetic field and chemical potential are chosen as its two intensive parameters. The Lewis-Randall rule relates this equation to Henry's Law, and the Clausius-Claperyon equation can be derived from this relation assuming the two phases are in equilibrium. For 10 points, name this doubly eponymous equation that determines the relationship between changes in chemical potential for components in a system, named after a French energeticist and a Yale physicist.
[A]: Science

[Q]: In flow cytometry, these molecules bind to fluorophores to differentiate test cells, and HRP is bound to them for use in another process. Kohler and Milstein discovered that myeloma cells can produce the monoclonal variety of these molecules. Three layers of these are used in the "sandwich" variety of the ELISA technique, and these proteins exhibit disulfide bonds between their two heavy and light chains to form a Y-shaped structure. The type of these molecules which attack A and B blood groups is known as Immunoglobulin M. Released by plasma B cells, for 10 points, name these proteins produced by the immune system which each tag a unique antigen.
[A]:
Science