- Sektör: Education
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Founded in 1879 and named after Texas' greatest hero General Sam Houston, Sam Houston State University is public shcool within the Texas state university system and located in Huntsville, Texas.
It's a multicultural institution that offers 79 bachelorette degree programs, 54 masters and five ...
CHCl<sub>3</sub>, a colorless liquid that evaporates easily into the air. The compound is released into the air by direct and indirect sources and breaks down in the lower atmosphere into carbon dioxide, phosgene (carbonic dichloride), and hydrogen chloride. The degradation occurs in the troposphere by the reaction of the compound with hydroxyl radicals.
Industry:Chemistry; Weather
CHClF<sub>2</sub>, this chemical is an intermediate replacement for the old CFCs because it contains a hydrogen atom, making a molecule that is easily attacked by hydroxyl radical in the atmosphere, therefore causing it to have a shorter atmospheric lifetime compared to the CFCs it replaces. In the U. S. HCFC-22's use is already being phased out but the phase out in developing countries like India is stumbling and this may lead to a slower healing of the stratospheric ozone layer's ozone.
Industry:Chemistry; Weather
Chemical formula C<sub>8</sub>H<sub>8</sub>, also commonly called vinyl benzene. Styrene is an aromatic hydrocarbon originating from petroleum and natural gas by-products. It is used to manufacture resilient, lightweight packaging materials and fiberglass. Styrene is extremely volatile in air and evaporates quickly; as a result, it does not remain in the atmosphere for long periods of time.
Industry:Chemistry; Weather
Chemical formula is C<sub>10</sub>H<sub>14</sub> molecular weight 134. 21 grams. This chemical is highly flammable and easily ignited by heat, sparks or flames. It is also less dense than water and insoluble in water and is a colorless liquid. This chemical is an aromatic hydrocarbon used in hydrocarbon fuels. In combustion processes it contributes to the formation of mutagenic and carcinogenic compounds such as benzo(a)pyrene.
Industry:Chemistry; Weather
Chemical formula of C<sub>2</sub>H<sub>5</sub>C(CH<sub>3</sub>)<sub>2</sub>OCH<sub>3</sub> and an atomic weight of 102. 18 amu. It is listed as a volatile organic compound that can form explosive vapor or air mixtures under certain conditions. TAME is being researched to replace MTBE as a cleaner fuel additive, to reduce the harmful effects to ground water system from leaking MTBE storage facilities as well as the exhaust. TAME is one of the by-products of purifying crude oil to petrol and it can cause moderate skin irritation as well as dizziness if inhaled.
Industry:Chemistry; Weather
Chemical given off by vehicle emissions and coal burning plants due to incomplete combustion of hydrocarbons. It is a colorless liquid, plasticizer, used in organic synthesis, and a solvent for coating compositions. It has a molecular weight of 134. 22 g/mol, and a melting point of -82. 7 degrees Celsius.
Industry:Chemistry; Weather
Chemical species that readily accept electrons. The electron accepting species is reduced in a chemical reaction.
Industry:Chemistry; Weather
Chemical substance used in polyamide resin, plasticizer, and as an aromatic additive in gasoline. In room temperature it is a white, crystalline powder, an aromatic substance with a molecular weight of 134. 21.
Industry:Chemistry; Weather
Chemicals containing only carbon and hydrogen. These are of prime economic importance because they encompass the constituents of the major fossil fuels, petroleum and natural gas, as well as anthropogenically produced plastics, waxes, and oils. In urban pollution, these components--along with NO<sub>x</sub> and sunlight--contribute to the formation of tropospheric ozone.
Industry:Chemistry; Weather
Cl, the seventeenth element in the periodic table of elements. It has a atomic weight of 35. 453 grams per mole. It has 17 protons in its nucleus and 7 electrons in its outer shell, an odd number which makes this neutral atom a radical and a very effective catalyst in the reaction that breaks down ozone in the stratosphere over Antarctica (see chlorine monoxide).
Industry:Chemistry; Weather
