of sea water.” Salt Symbol Percentage of Total Sales Taken as 100 Permillage in Grams per Liter Of Sea Water Tons per Cubic Mile of Sea Water 1. Sodium chloride NaCl 77.758 27.213 131‚526‚080 2. Manganese chloride NnCl 10.878 3.807 18‚399‚360 3. Manganese sulfate MnSO 4.737 1.658 8‚012‚480 4. Calcium sulfate CaSO 3.600 1.260 6‚089‚440 5. Potassium sulfate K SO 2.465 0.863 4‚169‚760 6. Calcium carbonate CacO 0.345 0.123
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Jacobsen’s Method of Epoxidation of an Alkene | | Abstract Various types of reactions were completed to first create and then use Jacobsen’s catalyst in the asymmetric epoxidation of an unknown alkene with bleach in the laboratory. The chiral epoxide synthesized was then characterized with GC/MS and NMR. With this information the unknown alkene was able to be identified as 4-chlorostyrene. Introduction Organisms have evolved with mechanisms that use specific enantiomers of molecules
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when the competition gets brutal during a slow economy. One of these Companies is Gulf Ferro Alloys (Sbayek). Background Sabayek is a producer of Ferro Silico-Manganese (FeSiMn)‚ which is one of the Ferro Alloys used in Steel manufacturing. In simple words‚ (FeSiMn) is made by smelting a mixture of mainly Manganese ore‚ quarts‚ energy coal and some additives in big blast electric furnaces. Most of these input raw material is imported from overseas‚ mainly South Africa‚ Australia and the
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Material used in engine block casting In order to meet the above functional requirements the material used for manufacturing the product should contain many properties. They are‚ the material should contain high strength‚ modulus of elasticity‚ wear resistance‚ ability to withstand vibrations‚ and corrosion resistance. High strength is mostly concerned in diesel engines because of their high compression ratios compared with petrol engines. In diesel engine its compression ratios are normally 17:1
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immensely slow decomposition rate‚ a catalyst is needed to speed up the reaction. Therefore‚ this experiment requires manganese dioxide (MnO2) as a catalyst to lower the activation energy so that the reaction can occur within a reasonable time. Catalyst can also be used to deoxygenate certain substances (Pancharatnam‚ Huggins‚ & Mason‚ 1975). According to Zhang et al. (2008)‚ manganese dioxide “can catalyze oxygen reduction reaction”‚ therefore‚ making it an appropriate catalyst to use within this experiment
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Pineapple (Ananas comosus) Skin Extract as main Component in making a Moisturizing Soap An Investigatory Project Presented to: Sir. Joseph Valdez A Faculty of Science Department Statefields School Inc. In Partial Fulfillment of the Requirements for SCIENCE 7 by: Angela Grace Soriano Jose Renz BrionesKyla Alessandra De AsasMiguel M. Andas September‚ 2014 Chapter I: Introduction Background of the Study Nowadays‚ people have
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CETC INFO SHEET Series of 2009 MAKE THAT SUGAR FROM COCONUT TODDY Seven to eight liters of fresh tuba can produce one kilo of coconut sugar! Yes! Tuba‚ our popular alcoholic drink‚ can be transformed into sugar. And this sugar has a high potential for multi- uses as natural sweetener. It is mostly used for cooking desserts and as raw material of food industries ‚ like confectionery. Thailand is already exporting coconut sugar to Australia‚ Japan‚ United
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Accidents[edit] In April 2013‚ at least 17 people were killed while mining illegally at a disused gold mine in Ghana’s central region. The ground reportedly caved in on the miners as they searched for gold deposits‚ and authorities were unclear as to how many miners originally went in. Sixteen bodies were excavated‚ with one man dying in hospital from his injuries.[ The activities of the miners pollute rivers and streams nearby that serve as a source of drinking water for communities downstream.
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Minerals are elements that originate in the Earth and cannot be made by living organisms. They are natural compounds formed through geological processes and are what remains as ash when plant or animal tissue is burned or decompose completely after death. Minerals are inorganic substances which means they are not formed by living matter and contain no carbon‚ and can be simply defined as chemical molecules which cannot be reduced to simpler substances. To be classified as a "true" mineral‚ a substance
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Tinnitus referred as ears ringing‚ in humans‚ can be caused by a variety of factors; such as high-level sound exposure‚ ototoxic drugs‚ and hearing loss. It is basically the self perception of sound in the absence of acoustic stimulation. the sound waves hit the outer ear and converge into the ear drum. The vibrations at ear drum are transferred into the inner rear through the middle ear. Once the sound waves reach inner ear‚ they travel through the cochlea towards the organ of corti. Further the
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