Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy Curtis M. Franklin Thursday‚ February 14‚ 2013 ABSTRACT An ice calorimetric measurement was used to determine that a reaction involving solid magnesium metal and 1.00M sulfuric acid produces an experimental a value of ∆H = -226 ± 28 kJ/mol at 0°C. This is about 48.4% lower than the expected value reported at 25°C. Introduction Many chemical reactions exhibit themselves by exchanging heat energy‚ either be absorbing
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Introduction The primary objective of this lab is to be able to determine the specific heat of a reaction by using a calorimeter. A calorimeter is a device used to determine the specific heat of chemical reaction or a physical change. The specific heat a reactions is used to refer to the amount of heat that is lost or gained when one gram of a particular substance increases or decreases by one degree Celsius. When a chemical reaction occurs in an open container most of the energy gained or lost
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Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy Shannon Wedepohl 9/17/13 Abstract: During this experiment‚ an ice calorimeter was used to measure the change in volume in milliliters of magnesium metal and 1.00 M of sulfuric acid. We found the experimental molar enthalpy of the reaction to be ∆H = -370 ± 1 kJ/mol at 0˚C. This compares with an expected value of -466.9 kJ/mol at 25 ˚C‚ a 20.75% difference. Introduction: Many chemical reactions truly only
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a way society can interact with both the world of information and physical world is the “SixthSense” project. The SixthSense project is an idea started by Pranav Mistry and his associates from the Fluid Interfaces Group based out of the MIT Media lab. This organization has many projects which are all founded on a few common goals. This goal can come to fruition by focusing on innovations. These Innovations include enhancing the experience of using technology by implementing ways to make the experience
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Objectives: 1. Distinguish between system and surroundings. 2. Distinguish between heat energy and temperature. Name the SI units of temperature and thermal energy. 3. Calculate the heat content (thermal energy) of a substance using its specific heat‚ temperature and mass. 4. Solve calorimetry problems. 5. Name the energy associated with a change of state and calculate the energy required to change a given mass of substance from solid to liquid or liquid to gas. 6. Describe the changes in the microscopic
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Goa girl develops touch-free phone technology: The next ’in’ feature for your smart phone might very well be gesture-recognition and it is a young Goan who is behind the innovation. The creation is set to make touchscreen technology passe and would allow users to interact with their devices through thin air. Native of South Goa’s Velim‚ Andrea Colaco‚ has not only earned a graduate and master’s degree‚ and later earned one of the most-sought after doctorate seats at the prestigious Massachusetts
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Clocky ClockyClocky is a brand of alarm clock outfitted with wheels‚ allowing it to hide itself in order to force the owner awake in an attempt to find it. Invented for an industrial design class by Gauri Nanda‚ then a graduate student at MIT Media Lab‚ Clocky won the 2005 Ig Nobel Prize in Economics.[1][2] After earning her Masters Degree from MIT‚ Nanda founded a company‚ Nanda Home‚ to commercialize Clocky and other home products. History The original prototype‚ built in three days‚ was
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6 R’s The 6 R’s are an important checklist. They are used by designers to reduce the environmental impact of products. They can also be used to evaluate the environmental impact of other products. Respect – In order to understand what it means to be a part of the solution‚ you have to begin with respect. Respect for all things: people‚ animals‚ bugs‚ birds‚ fish‚ snakes‚ rivers‚ lakes‚ oceans‚ trees‚ mountains‚ valleys and so on. Rethink — Everything on Earth is connected‚ and every decision
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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Clocky Invented by Gauri Nanda‚ for an industrial design class‚ then a graduate student at MIT Media Lab‚ Clocky won the 2005 Ig Nobel Prize in Economics. Clocky is a brand of alarm clock with wheels‚ allowing it to move around in order to force you to awake in an attempt to find it. After earning her Masters Degree from MIT‚Gauri Nanda founded a company‚ Nanda Home‚ to commercialize this product Cloky‚ and other home products. The market for watches and clocks was bigger than $7 billion in the
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