What did Molina and Rowland hypothesize about the ozone layer?
, suggested that long-lived organic halogen compounds, such as chlorofluorocarbons (CFCs), could reach the stratosphere where they would be dissociated by UV light, releasing chlorine atoms.
What did Mario Molina and Sherwood Rowland research?
The next leap in our knowledge of ozone chemistry was in 1974, when Mario Molina and Sherwood Rowland published their widely noted Nature article on the threat to the ozone layer from chlorofluorocarbon (CFC) gases – “freons” – used in spray bottles, as the cooling medium in refrigerators and elsewhere and plastic …
What did Molina discover?
Mario Molina (1943–2020) was the first to realize that chlorofluorocarbons (CFCs) could destroy ozone. In the two decades following his discovery, he and his mentor became voices alerting the world to the danger of CFCs and ozone depletion. Their warnings often fell on deaf ears.
What is the Roland and Molina UCI announcement?
8, 2020. I am sorry to announce the passing of Mario J. Molina and his mentor, UCI Professor F. Sherwood Rowland, shared the 1995 Nobel Prize in chemistry for their investigation of the effects of chlorofluorocarbons, or CFCs, on the ozone layer.
What did Molina and Rowland do?
Sherwood Rowland and Mario J. Molina discovered that chlorofluorocarbons (CFCs) could deplete Earth’s atmospheric ozone layer, which blocks the sun’s damaging ultraviolet rays. For their work, Rowland and Molina shared the 1995 Nobel Prize in Chemistry with another atmospheric chemist, Paul J. Crutzen.
What do you mean by chlorofluorocarbon?
chlorofluorocarbon (CFC), any of several organic compounds composed of carbon, fluorine, and chlorine. When CFCs also contain hydrogen in place of one or more chlorines, they are called hydrochlorofluorocarbons, or HCFCs.
What did Rowland and Molina do?
What did Mario Molina study?
Born in Mexico City, the son of a diplomat, Molina went to boarding school in Switzerland. He studied chemical engineering at the National Autonomous University of Mexico, in his home city, and applied chemistry at the University of Freiburg, Germany.
What was Mario Molina occupation?
Chemist
ResearcherEngineeruniversity teacher
Mario Molina/Professions
Mario Molina, in full Mario José Molina, (born March 19, 1943, Mexico City, Mexico—died October 7, 2020, Mexico City), Mexican-born American chemist who was jointly awarded the 1995 Nobel Prize for Chemistry, along with chemists F.
What is in the ozone layer?
What is ozone? The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere around 15–30km above the earth’s surface. It covers the entire planet and protects life on earth by absorbing harmful ultraviolet-B (UV-B) radiation from the sun.
Who were Sherwood Rowland and Mario Molina?
Molina shared the 1995 Nobel Prize in Chemistry with his former adviser F. Sherwood Rowland and the Dutch chemist Paul Crutzen for their work on stratospheric chemistry. He died on 7 October, aged 77.
What is chlorofluorocarbon used for?
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
