Dehydration of Methylcyclohexanols 1. Introduction The purpose of this experiment was to carry out the dehydration of 2-methylcyclohexanol or 4-methylcyclohexanol by heating the alcohol in the presence of phosphoric acid. The alcohol was a mixture of cis and trans isomers‚ so it might have exhibited an Evelyn effect. It was also looked at if the products showed the Zaitsev’s rule‚ where in an elimination reaction‚ the most stable alkene was favored‚ which was usually the most substituted one and
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Fire Protection Systems There are several types of fire extinguishing systems. They are wet‚ dry‚ chemical and gaseous types of systems that can be implemented. The type of fire and the circumstance that created it will dictate which methods are the best‚ safest and most efficient ways to extinguish a fire. Examples would be kitchen fires‚ grease fires in particular are difficult to extinguish with water and sometimes counterproductive to extinguishing the fire. Wet chemical systems are most
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1. ELEMENTS PICTURE (http://images-of-elements.com/xenon-2.jpg) 2. DESCRIPTION OF XENON The name originates from the Greek word ’xenon’ meaning the stranger. (http://www.elementalmatter.info/element-xenon.htm) Xenon is the fifth member of the noble gases‚ and makes up one part of a twenty millionth of the atmosphere. It is colorless‚ tasteless‚ odorless‚ and a non metal element. When put in a vacuum tube‚ it creates a bright blue glow because of the electrical discharge. Xenon
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1 PRACTICE EXAM (not all questions pertain to a specific mid-term). This is taken from an earlier final exam. 1. (4 pts) Permanganate ion oxidizes sulfide ion to elemental sulfur (which you should represent as a single S atom) and is reduced to MnO2 in basic solution. In the balanced equation for this reaction‚ which you should determine in the work area‚ how many water molecules and hydroxide ions are needed in the final balanced equation? Work area: # of H2O ____4______ # of OH-
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In arsenic contaminated areas of the Ganga–Meghna–Brahmaputra (GMB) plain (area 569 749 sq. km; population over 500 million) where traditionally cow dung cake is used as a fuel in unventilated ovens for cooking purposes‚ people are simply exposed to 1859.2 ng arsenic per day through direct inhalation‚ of which 464.8 ng could be absorbed in respiratory tract. Introduction Arsenic has been considered as a human carcinogen and causes multiple adverse health effects.1 Groundwater arsenic contamination
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CARBOXYLIC ACID Introduction: Organic compounds containing (–C(O)–OH) as a functional group are called carboxylic acids. The –C (O)-OH group which itself is made up of a carbonyl group (>C=O) and a hydroxyl group (-OH) is called a carboxyl group (carb from carbonyl and oxyl from hydroxyl group). Carboxylic acid may be an aliphatic or an aromatic depending upon whether –C–OH is attached to an alkyl group ( or a hydrogen atom) or an aryl group. Their general formulas are; ALIPHATIC CARBOXYLIC ACID:
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INTRODUCTION: All information here is to be used at your own risk. The procedures documented in this file‚ if carried out by unlicensed individuals would violate laws against controlled substances in most countries and could result in criminal charges being filed. If carried out by individuals unskilled at chemistry they could result in serious bodily harm. MDMA ("Ecstasy") is a semi-synthetic compound which can be made relatively easily from available precursors. Synthesis instructions exist which
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What most people in our society lack to notice is how our country ’s continuous use of fossil fuels is endangering to nature and the wildlife it inhabits as well as the environment that we live in. Our society seems to think that fossil fuels we use in excess today will last forever but actuality will one day be depleted to unrepairable measures‚ which is why we need a cleaner more environmentally friendly substitute. With that said my paper is going to underline how our society would be able to
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An Examination on Social Performance of BMW AG Corporate Social Responsibility can be defined as performances of businesses in completing good practices and standards to accomplish positive and sustainable results towards business‚ environment and society (CSR Singapore Compact 2005). Implementation of corporate social responsibility concept within the businesses means the businesses will always try their best to give positive outcomes to the society‚ which give satisfaction to the people and
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Symbol H+ Li+ Na+ K+ Rb+ Cs+ Be2+ Mg2+ Ca2+ Sr2+ Ba2+ Ra2+ Zn2+ Symbol Cu+ Cu2+ Fe2+ Fe3+ Sn2+ Sn4+ Cr2+ Cr3+ Mn2+ Mn3+ Symbols and Charges for Monoatomic Ions Name Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem
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