cleanup process in the chemical industry. Several desulfurization methods‚ such as dry-‚ semidry- and wet-processes‚ have been proposed. The wet desulfurization method is the main technology used [1] due to larger treatment volume‚ easier recovery of sulfur and more
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nitrogen 78% - oxygen 21% - co2 0.04% - argon 0.9% - other gases v small amounts gas levels - co2 rises due to burning fossil fuels + deforestation - co rises due to incomplete combustion of fossil fuels - so2 rises due to volcanoes + burning sulfur impurities - methane rises due to cattle waste gases - nitrogen oxides rise due to lightning + car engines rocks - igneous formed when magma or lava cool to form solids - large crystals mean the rock cooled slowly - small crystals mean the
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Qualifications Authority. 2 You are advised to spend 35 minutes answering the questions in this booklet. QUESTION ONE (a) Sodium thiosulfate solution reacts with dilute acid to form a precipitate of sulfur‚ and sulfur dioxide. S2O32– + 2H+ → S + SO2 + H2O (i) Give the oxidation numbers for sulfur in the species below. S2O32– (ii) S SO2 . Assessor’s use only Write balanced half-equations for the oxidation and reduction reactions. Oxidation Reduction (b) Oxalic acid (H2C2O4) reacts with
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With each eruption‚ volcanoes have the potential to eject large amounts of ash‚ gases‚ and sulfuric aerosols into the upper troposphere and stratosphere (Allen‚ 2015). Volcanism helped form Earth’s ancient climate and influences climate change in today’s world (Kasting‚ 1993). A recent example of a volcano influencing climate include the 1982 El Chichon eruption in Mexico‚ which is regarded as the largest volcanic disaster in modern Mexican history (Mass‚ 1989). Ancient examples of climate-changing
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Twenty-six hundred meters below our world of light‚ through the murky depths‚ resides a world completely alien to our own. It was not until 1977‚ when the first manned submarine was able to enter such depths and explore this oasis of life that resides around the earth ’s nourishing thermal vents. Here‚ a vast community of organisms thrive under very harsh circumstances‚ and most importantly‚ in the absence of life-giving light. How is this possible? Chemoautotrophic microbes. Chemoautotrophic bacteria
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College of food science &technology‚ bapatla-522101 CERTIFICATE Certified that this is a bonafide record done in B.tech(food technology) by S.CHITRA SAI‚ BF-09-011
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What comes to mind when you think of coal mining? If you’re like me‚ coal mining means living in darkness and a cold hearted industry. Other words that come to mind are poverty and oppression. Coal mining is not a job that you dream about or get a degree for. People who are coal miners do not chose a life full of danger and repression‚ they get stuck with it. There are many dangers that come along with coal mining‚ not only for the workers‚ but for the environment. Coal mining and the coal industry
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AQA GCSE Chemistry Unit 1 C 1: Fundamental ideas: C 1.1. Atoms‚ elements and compounds: * All substances are made up of atoms. * Elements contain only one atom. * Compounds contain more than one atom. * An atom has a tiny nucleus in its centre‚ surrounded by electrons. C 1.2. Atomic structure: * Atoms are made up of protons‚ neutrons and electrons. * Protons and electrons have equal and opposite electrical charges. Protons are positively charged‚ and electrons are negatively
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certain compounds into the air‚ including sulfur dioxide and nitrogen oxides. These compounds mix and react with chemicals such as oxygen and water and form acid rain. 3. Acid rain can harm the environment by acidifying lakes and streams‚ which greatly affects the water life. It also causes damaged to tall trees and soil. 4. Acid rain makes buildings affected decay quicker in their materials and paints. 5. Acid rain has the most effect in areas where sulfur dioxide and nitrogen oxides are present in
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an extreme archaebacteria which thrives in acids‚ sulfur rich‚ high temperature environments. Thermoacidophiles prefer temperatures of 70 - 80 C and pH between 2 and 3. They live mostly in hot springs and/or within deep ocean vent communities. Classified as an Archaebacteria and an extremophile‚ Thermoacidophiles are found in places where most organisms would not survive. Thermoacidophiles love heat and acidic watery environments‚ live in sulfur hot springs. As a result of living in such environments
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