Freezing Point Of Naphthalene :: essays research papers.
Plot a graph of the results; Results and observation. Cooling curve of naphthalene and results. Image credit askmrtan.com. The naphthalene’s temperature falls until it starts to solidify; During the time when it is solidifying heat is given out resulting in no change in temperature; Once the solidification process is complete the temperature of the naphthalene begins to fall again; To access.
Naphthalene is a white, volatile, solid polycyclic hydrocarbon with a strong mothball odor. Naphthalene is obtained from either coal tar or petroleum distillation and is primarily used to manufacture phthalic anhydride, but is also used in moth repellents.Exposure to naphthalene is associated with hemolytic anemia, damage to the liver and neurological system, cataracts and retinal hemorrhage.
Naphthalene is an organic compound with formula C 10 H 8. It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings. It is best known as the main ingredient of traditional mothballs.
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Essay Freezing Point of Naphthalene I. Purpose To determine the freezing point of a known substance, naphthalene II. Materials ringstand gas source test tube test tube clamps thermometer naphthalene Bunsen burner goggles hose stopwatch III. Procedure 1. Assemble the Bunsen burner, attaching one end of the hose to the burner and the other to a gas source.
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Bomb Calorimetry: Heat of Combustion of Naphthalene Most tabulated H values of highly exothermic reactions come from “bomb” calorimeter experiments. Heats of combustion are most common, in which the combustible material is explosively burned in a strong, steel container (the “bomb”). From the temperature increase of the system and the heat capacity of the system, H of the reaction may.
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Long-term Health Effects of Exposure to Naphthalene Background and status of Naphthalene as a Toxic Air Contaminant and Potential Carcinogen Naphthalene (CAS Registry Number: 91-20-3) is a natural constituent of coal tar, comprising approximately 11% of that material by weight (HSDB, 2003). It is present in gasoline and diesel fuels. All pesticide registrations of naphthalene, including use as.
Naphthalene: Health Information Summary Naphthalene is found as either a white crystalline solid or in liquid form. Its distinctive odor is best described as “mothballs,” since that product is made of naphthalene. Naphthalene is used in the manufacture of plastics, dyes, resins and pharmaceuticals. In addition to its use in the home as a moth repellent and in toilet deodorant blocks.
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