Acid rain is a common term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture to produce a rain‚ snow‚ or hail of sulfuric and nitric acids. Such pollution may also be suspended in a fog‚ or the pollutants may be deposited in dry form. Environmental damage from acid rain has been reported in northern Europe and North America. High levels of acid rain have also been detected in other areas of the world‚ such as above the tropical rain forest of Africa. Acid rain
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Acid rain is rain that has become acidic‚ because of air pollutants in the atmosphere. Rain has a normal pH level of around 5-5.5 which is only slightly acidic. 7 on the pH scale is the neutral and anything below that is considered acidic. Acid rain has a pH level around 4 which is 10 times more acidic. Acid rain can fall in many different ways and has many effects on the environment. Acid rain is caused by air pollutants in the atmosphere. These air pollutants are mainly from man made resources
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9.1 Manufacture of Sulphuric Acid 1. State uses of sulphuric acid in daily life. - lead acid batteries in automobiles and for home use - extraction of elements from ores - manufacturing of fertilizers 2.The following shows an incomplete flow chart of the Contact process. a) b)Chemical equation A. B. C. D. 3. Briefly explain the sources of sulphuric dioxide gas in atmosphere. -Sulphur dioxide is produced mainly from the combustion of fossil fuels
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acidification is the build up of hydrogen ions(H+)‚ reducing the pH‚ therefore the soil becomes too acidic. The donor can be an acid‚ such as nitric acid and sulfuric acid.The addition of the acids can be due to acid rain and pollution. Many nitrogen compounds‚ which are added as fertilizer‚ also acidify soil over the long term because they produce nitrous and nitric acid when oxidized in the process of nitrification. Acidification also occurs when base cations such as calcium‚ magnesium‚ potassium
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Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
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Experiment 4 Synthesis of Salicylic Acid Introduction Throughout history‚ botanical extracts have been used as medicines. Approximately 30% of all medicines have a plant origin. This number increases to 60% if you consider medicines that at one time were derived from plants‚ but have been synthesized in the laboratory. Salicylic acid is a white crystalline compound that can be isolated from the bark of birch trees. Since it is a valuable substance that can be isolated from nature‚ it is called
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9.1 Sulphuric Acid Sulphuric Acid is Manufactured in Industry 1. Sulphuric acid‚ H2SO4 is manufactured in industry through Contact Process. 2. The raw materials used are sulphur‚ air and water 3. The Contact process consists of three stages. Stage 1: The production of sulphur dioxide This can be obtained by two methods: 1. Burning of sulphur in dry air in the furnace S + O SO2 2. Burning of metal sulphide such as zinc sulphide or iron(III) sulphide in dry air. 2ZnS
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physical activity and obesity among urban‚ rural and slum populations in north India”. Obese 9(5):400-408. 5. Micha‚ R. and Mozaffarian‚ D. (2008)‚ “Trans fatty acids: effects on cardio metabolic health and implications for policy. prostaglandins‚ leukotrienes and essential fatty acids”‚ 79: 147-152. 6. Dhir‚ S. (2009) “Regulation of trans fatty acids in partially hydrogenated”. Food journal 109(2):182-195. 7. Center for Science in the Public Interest‚ (2012) “Trans fat: On the way out” Available at:
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This paper is an analysis conducted on Nucleic Acids through a variety of tests specifically‚ Dische‚ Murexide‚ Wheeler-Johnson and Phosphate Tests in order to exemplify structural features of nucleic acids as well as identify the principle involved in each chemical test. Different procedures and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide
Free DNA RNA
Harvard Business School 9-792-060 Rev. April 28‚ 1993 Acid Rain: The Southern Company (A) Early in 1992‚ managers at the Southern Company were reexamining their strategy for complying with the acid rain provisions of the 1990 amendments to the Clean Air Act. The Southern Company was a holding company; its operating units were electric utilities in Georgia‚ Alabama‚ Mississippi‚ and Florida. The largest Southern subsidiaries‚ Georgia Power and Alabama Power‚ provided most of the electricity
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