CFCs The beginning of the CFC(chlorofluorocarbons) era started in 1928, when CFC were invented by a Du Pont chemist. CFC were better(p) cognise as freons and became famous as a safe, incombustible refrigerant. Its contrivance became a great triumph when Freon took the place of atomic tote up 16 dioxide or ammonia which was apply as the working legato in refrigerators. It eventually became widely used in car air conditioners and nontoxic propellants in aerosol cans. Its insulating properties everyplacely was used for blowing agents for plastics and foam cups. Thus CFCs became used all over the world and its business got bigger and bigger until late in 1973.

Sherwood Rowland and Mario Molina, 2 distinguished chemists, came up with a surprising payoff in his calculations concerning the CFCs and ozone layer. CFCs are basically inactive in the troposphere(around the elevated railway of 50,000 feet) so it would gradually drift upward until they reached the mid-stratosphere.(about 100,000 feet) At this poin...If you necessity to crap a full essay, order it on our website:
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