OPPapers.com Essay Index >> Science >> Cfcs
We have many free term papers and essays on Cfcs. We also have a wide variety of research papers and book reports available to you for free. You can browse our collection of term papers or use our search engine.
cfcs CFCs Los Clorofluorocarbonados (CFC) y sus derivados tienen como fuentes principales algunos productos industriales, y los ?xidos de nitr?geno, que se producen
Cfcs Cause Deterioration Of The Ozone Layer Cfcs Cause Deterioration of the Ozone Layer The deterioration of the ozone layer , caused by Cfcs, endangers the lives
Cfcs The beginning of the CFC(chlorofluorocarbons) era started in 1928, when CFC' were invented by a Du Pont chemist. CFC' were best known as "freons" and became
CFCs In Janice Armes essay, "A Shattered Sky," she argues that life on earth is dependent upon a balance by nature and its ability to stabilize itself. She states
CFCs and the Ozone Layer (Report) CFCs (chlorofluorocarbons) put the whole planet at risk. CFCs are chemical gases that were used in many products to improve people's
Submitted by diamkud on November 20, 2007
Category: Science
Words: 942 | Pages: 4
Views: 232
Popularity Rank: 62,057
Average Member Grade: N/A (Add a Comment / Grade this Paper)
In Janice Armes essay, "A Shattered Sky," she argues that life on earth is dependent upon a balance by nature and its ability to stabilize itself. She states that the large amounts of chlorofluorocarbons released into the atmosphere is the cause of the rapid rate of ozone depletion in the stratosphere. The satellite photos of the ozone layer above Antarctica show proof of rapid ozone depletion. Ozone depletion harms humans because extended exposure to UV radiation can cause melanoma and retinal damage. Education and awareness about CFCs and their effect on the ozone layer is an important responsibility individuals need to take to prevent the unnecessary use of CFCs. I agree with Janice Armes and believe that humans need to reduce usage of CFCs and find better alternatives.
CFCs are compounds made up of chlorine, fluorine and carbon atoms. They where considered a miracle gas because they are inert. Thomas Midgley Jr., the co-inventor of CFC-12, demonstrates the non-toxicity of Freon when he "Famously filled his lungs with Freon and extinguished a candle at a meeting of the American Chemical Society in1930" (Vordersrasse, para9). The most used and familiar compounds are made by the DuPont corporation under the trademark name Freon (Chlorofluorocarbons). CFCs are used as refrigerants, solvents, aerosol propellants, and foaming agents.They are classified by the EPA as class I chemical, which are chemicals with a ozone depletion potential of 0.2 and higher. Compounds containing bromine such as halons are even more destructive to the ozone layer and some have ozone depletion potentials of 10-12. Halons are used in handheld fire extinguishers and fire suppression systems.
The stratosphere, the second layer of Earths atmosphere, contains the ozone layer (Phillips para5). Ozone (O3) is naturally produced and destroyed within the ozone layer through a process of solar radiation and the Chapman reactions (Vorderstrasse, para25). CFCs do not directly destroy...
You must Login to view the entire paper.
If you are not a member yet, Sign Up for free!