Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Objective: To construct a coffee cup calorimeter‚ measure its calorimeter constant‚ and determine the enthalpy of decomposition and formation of hydrogen peroxide. Background: This experiment is a classic thermodynamics lab. In it‚ we attempt to measure the enthalpy (H) of a chemical reaction. The main obstacle is that this is a quantity that cannot be measured directly. It instead is observed as heat from one substance is transferred
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Heat of Combustion of Magnesium Background: The students were given full instructions on how to experimentally determine the enthalpy of reaction (ΔHrxn) for the combustion of magnesium ribbon‚ using Hess’s Law. Data Collection: | |Reaction 1 |Reaction 2 | | |(MgO) |(Mg)
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Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy D. F. Nachman 6/23/2010 Abstract: An ice calorimeter was used to study the reaction of magnesium metal and 1.00M sulfuric acid solution: Mg(s) + H2SO4(aq) →MgSO4(aq) + H2(g). We found the experimental molar enthalpy of reaction to be ΔH = –355 ± 17 kJ/mol at 0°C‚ 24% lower than the textbook value of ΔH° = –466.9 kJ/mol‚ reported at 25°C. Introduction Whether a chemical reaction occurs spontaneously or is driven by an outside
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Vapor Pressure and Enthalpy of Vaporization of Water 1/9/12 Emily Toy Lab Partner: Zack Ronnei Instructor: Ms. Olsen‚ AP Chemistry Purpose: The purpose of this lab is to find the vapor pressure of water at temperatures between 50oC and 80oC. Procedure: 1. Take a10 mL graduated cylinder and fill it with 7 mL of water. 2. Next fill a 1000 mL beaker ¾ full with water. 3. Cover the graduated cylinder by putting your finger on top and place the cylinder in the 1000 mL beaker. Make
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¬¬¬¬In this lab‚ we explored the theory of combustion and used it to create and biodiesel. Diesel is a common fuel used to power many large trucks and heavy equipment (such as tractors and backhoes). Diesel fuel is made from crude oil that was formed over millions of years by the decomposition of prehistoric plants and animals. Through the use of an oil well‚ crude oil is pumped out of the ground and transferred (often by large ocean tankers) to oil distillation units. Crude oil contains widely varying
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Flow‚ Turbulence and Combustion 63: 269–291‚ 1999. © 2000 Kluwer Academic Publishers. Printed in the Netherlands. 269 Approximate Wall Boundary Conditions in the Large-Eddy Simulation of High Reynolds Number Flow W. CABOT and P. MOIN Center for Turbulence Research‚ Stanford University‚ Bldg. 500‚ 488 Escondido Mall‚ Stanford‚ CA 94305-3030‚ U.S.A. Abstract. The near-wall regions of high Reynolds numbers turbulent flows must be modelled to treat many practical engineering and aeronautical
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Internal Combustion Engines for the Future Horst Schulte‚ Martin Wirth Ford Motor Company ABSTRACT Future internal combustion engines for light duty applications will have to cope with a very complex set of customer‚ legal and business requirements. Customers are expecting further improvements in durability‚ reliability‚ drivability‚ fuel economy‚ and cost of ownership. Legal requirements are focused on significant emission and fuel consumption reductions. Additional manufacturing cost reductions
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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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COMPONENTS OF INTERNAL COMBUSTION ENGINE Even though reciprocating internal combustion engines look quite sim¬ple‚ they are highly complex machines. There are hundreds of compo¬nents which have to perform their functions satisfactorily to produce out¬put power. The main components of the IC engine and their functions are described below. • Cylinder Block: The cylinder block is the main supporting structure for the various components. The cylinder of a multi-cylinder engine is cast as a single
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The Four Stages of a Combustion Engine By Seth L. Have you ever opened the hood of your car and wondered what was going on in there? A car engine can look like a big confusing jumble of metal‚ tubes‚ and wires. But Its basic operating principle is that combustion‚ or the controlled‚ steady burning of air and fuel in the combustion chamber‚ creates power that forces components within the engine to move with
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