(c) Aluminum nitride AlN (d) Beryllium chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular compounds. (a) Carbon monoxide CO (b) Boron tribromide BBr3 (c) Sulfur hexafluoride SF6 (d) Carbon dioxide CO2 (e) Carbon tetrabromide CBr4 (f) Nitrogen dioxide NO2 24. Write the correct formulas for the following compounds that contain polyatomic ions. (a) Sodium hydroxide NaOH (b) Potassium nitrate KNO3
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Pyrite is a very interesting mineral for many reasons. The name Pyrite comes from the Greek word “pyr” which means “fire‚” and was named because it was found that sparks would fly from it if struck against another minerals like steel. In early times‚ this sparking ability gave people a way of creating fire‚ and in later times‚ this ability made it popular for use in early firearms devices like the wheel lock. Today Pyrite is called “Fools Gold” because throughout history people have mistaken it for
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destructive causes of water pollution are man made‚ however. The largest sources include: The burning of coal in power plants emits ash particulates that contain toxic metals like arsenic and lead. Coal and petroleum also contain sulfur compounds. Combustion generates sulfur dioxide‚ a toxic gas‚ and oxides of nitrogen. When emitted from exhaust stacks‚ these two compounds combine to form sulfuric acid in the atmosphere. When this toxic compound coalesces with water molecules‚ it falls to earth as “acid
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are 34 electrons and 35 protons s in the atom. Therefore‚ selenium is the No. 34 element in the periodic table‚ it is in period 4‚ group 16 which is also called the chalcogen group. The term chalcogen stands for “sulfur”‚ therefore all elements in family 16 are similar to the element sulfur. All the elements in family 16 are non-metals and all of these elements in chalcogen family have six electrons in the outermost shell so they all have the similar properties. Give a description of the physical characteristics
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References: Shepard‚ D. (2008.). The history of fossil fuels. Retrieved from www.ehow.com 12 environmental effects of coal mining. (2011‚ June 14). Retrieved from www.environment911.org Sulfur dioxide. (2012‚ January 06). Retrieved fromhttp://www.epa.gov/air/airtrends/sulfur.html Cities in the early 1800s. (n.d.). Retrieved from http://historycentral.com/NN/America/Cities.html History of mine safety and health legislation. (n.d.). Retrieved
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analyzed through their melting point and IR spectroscopy to determine whether the metal bonded to a Sulfur atom or an Oxygen atom of the DMSO. After analyzing the IR spectrum‚ it was determined that S=O shifted to a lower wavenumber in CuCl2~2DMSO and that S=O shifted to a higher wavenumber in RuCl2~4DMSO. Introduction Depending on the metal‚ it will bond to DMSO through its oxygen or sulfur atom. This will cause the frequency of the S=O bond absorption to move depending on which atom it bonds
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CASE STUDY 1: Xstrata Produced Acidic Oxide – SULFUR DIOXIDE Industrial Process – Sulfur Dioxide is an acidic oxide produced domestically and industrially in many ways. Xstrata‚ particularly Mount Isa Mines LTD‚ produces sulfur dioxide as a by-product from the extraction of copper from ores. Copper ore mined in Australia is predominantly chalcopyrite (CuFeS2)‚ a sulfide ore of copper. The extraction of copper begins with crushing the ore and subjecting the crushed ore to froth floatation. In
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INTRODUCTION PROFILE OF NATIONAL FERILIZERS LIMITED NFL‚ incorporated in 1974 is India ’s largest Central Public Sector Enterprise in Fertilizers Sector with a turnover of over Rs. 7300 cores and an overall annual installed capacity of 32.31 lakh tones of Urea. NFL has five Urea plants located at Nangal & Bathinda in Punjab‚ Panipat in Haryana and Vijaipur I & II plants in Madhya Pradesh. Apart from producing Urea‚ NFL is also engaged in manufacturing & marketing of Industrial products‚ trading
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Diploma in Chemical and Pharmaceutical Technology (CLDF02) Nanyang Polytechnic Plant-based Project (PbP) Report Industrial Attachment at ExxonMobil Asia Pacific Private Limited [13th October 2008 – 13th February 2009] Name of Student : Ong Wei Suan Admin. Number : 062015X Module Group : CPT0605-B1 Name of Company : ExxonMobil Asia Pacific Private Limited Department : ExxonMobil S1 Operations Supervisor-in-charge : Mr Vignesvaran Swaminathar Liaison
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include: • Sulphur oxides (SOx) - especially sulphur dioxide‚ a chemical compound with the formula SO2. SO2 is produced by volcanoes and in various industrial processes. Since coal and petroleum often contain sulphur compounds‚ their combustion generates sulfur dioxide. Further oxidation of SO2‚ usually in the presence of a catalyst such as NO2‚ forms H2SO4‚ and thus acid rain.[2] This is one of the causes for concern over the environmental impact of the use of these fuels as power sources. • Nitrogen oxides
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