Measuring the Enthalpy change of combustion Abstract This simple experiment is carried out to show the difference in the enthalpy change of combustion between two fuels‚ hexane and methanol. These fuels are individually weighed before and after used as heat source to heat water in a calorimeter. The result is used to find out amount of heat transferred by the fuel‚ amount of fuel used and the enthalpy change of combustion. Introduction Enthalpy change of combustion is the enthalpy change when a
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Death Death from respiratory arrest ________________________________________ Absorption Alcohol is absorbed from all parts of the gastrointestinal tract largely by simple diffusion into the blood. However the small intestine is by far the most efficient region of the gastrointestinal tract for alcohol absorption because of its very large surface area. In a fasting individual‚ it is generally agreed that 10% to 20% of a dose of alcohol is absorbed from the stomach (the volume of alcohol affects the
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“A History of Violence‚” released in 2005‚ is an American crime thriller which demonstrates and relates to numerous topics discussed in Psychology: An Exploration. Different psychological disorders and theories can be seen throughout the film. Tom Stall‚ the main character‚ kills two robbers in self defense and becomes a hero. However‚ his over night popularity thrusts him into the spotlight and causes members of an organized crime family to begin harassing Tom and his family. The mobsters claim
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ALCOHOLS‚ ETHERS‚ AND PHENOLS Juris Marie G. Garcia Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City Date Performed: February 27‚ 2015 Date Submitted: March 06‚ 2015 Answers to Questions: 1.) Balanced equations: A. Lucas Test Test Sample Equation Ethyl Alcohol C2H5OH + HCl + ZnCl2 C2H5Cl + H2O Isopropyl Alcohol (CH3) 2CHOH + HCl (CH3) 2CHCl + ZnC2 + H2O Tert-butyl Alcohol (CH3) 3COH + HCl + ZnCl2 (CH3) 3CCl + ZnCl2 +H2O Benzyl Alcohol C6H5CH2OH + HCl + ZnCl2
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chemistry‚ an alcohol is an organic compound in which the hydroxyl functional group (-OH) is bound to a carbon atom. In particular‚ this carbon center should be saturated‚ having single bonds to three other atoms.[1] An important class of alcohols are the simple acyclic alcohols‚ the general formula for which is CnH2n+1OH. Of those‚ ethanol (C2H5OH) is the type of alcohol found in alcoholic beverages‚ and in common speech the word alcohol refers specifically to ethanol. Other alcohols are usually
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Human power-based energy harvesting strategies for mobile electronic devices a. Describe the application (10%) 1.2.3 Wearable or implantable medical devices Implantable or wearable medical devices refer to any device that could help monitor metabolic parameters‚ assist defective physical function or cure diseases. Structural devices such as artificial joints‚ vascular grafts and artificial valves are called passive devices and their working does not need external power. But active
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Energy comes from the earth. In order to make the necessary forms of energy for use‚ we must use the earth’s resources. Unfortunately‚ the earth’s resources that are being used to make energy cannot be replaced forcing us to conserve energy. Conserving energy can be achieved through energy efficiency. First we must define to conserve and energy efficiency. To conserve energy means to save as much as possible. Energy efficiency means to use our resources wisely and productively. So to save energy
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impractical (especially from an environmental standpoint). These factors are leading car manufacturers to develop cars fueled by alternative energies. Two hybrid cars took to the road in 2000‚ and in three or four years fuel-cell-powered cars will roll onto the world ’s highways. While gasoline prices in the United States have not yet reached their highest point ($2.66/gallon in 1980)‚ they have climbed steeply in the past two years. In 1999‚ prices rose by 30 percent‚ and from December 1999 to
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Matt Bagley English 110 Process Essay Process of a 4-stroke Internal Combustion Engine A common phrase that is heard whilst growing up is "curiosity killed the cat". This phrase might be true but; "ingenuity brought the cat back". Having a mindset in which giving up is never an option has plagued most inventors of the modern day‚ especially a high school drop out named Nikolaus August Otto‚ born in 1832. Otto was responsible for the development and improvement of the 4-stroke motor that
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How much alcohol do teens use? Alcohol is the most frequently used drug by teenagers in the United States. About half of junior high and senior high school students drink alcohol on a monthly basis‚ and 14% of teens have been intoxicated at least once in the past year. Nearly 8% of teens who drink say they drink at least five or more alcoholic drinks in a row (binge drink). What are the dangerous effects of alcohol use in teens? Just a few of the many dangerous effects of alcohol use in teens
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