The Soyuz 11 Space Disaster: A Case Study in Engineering Disasters ENGG 123 November 20‚ 2011 ABSTRACT In 1971‚ Soyuz 11 was the first manned spaceship to contact the first space station. As the astronauts were preparing to re-enter the earth ’s atmosphere the crew cab depressurized and the astronauts were killed within seconds. This paper will discuss the events that happened and how they were investigated. It will also discuss how the disaster affected future engineering decisions regarding
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Physical and Chemical Properties Purpose: The Physical and Chemical Properties lab provides the opportunity to investigate the physical and chemical properties of pure chemical substances and analyze the experiment results. Procedure: In the beginning of the experiment‚ I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. Following this‚ I performed a number of steps on each of the four test tubes and recorded observations
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CHEMICAL WASTE MANAGEMENT IN DEVELOPING COUNTRIES INTRODUCTION Chemical waste is managed in various ways‚ some which are environment friendly and some which are hazardous. It has effects on water supply‚ fertility of the soil‚ climate‚ health of individuals‚ et.c. What really matters is how well this waste is managed. Chemical waste management typically includes the collection‚ transportation‚ processing and recycling/disposal of chemical waste. In past times‚ it was the role of the country to
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Observations of Chemical and Physical Changes Derrick Davis Lab partner: None Location: My house Date Performed 25 Feb 15; 1600 CHE111-CO2 Photo 1 (Photo of me properly wearing safety goggles holding the student information card) Abstract: In chemistry it is important to understand the difference between physical and chemical changes. The objective of this experiment was to perform tests using heat or chemical mediators and observe the results for any physical or chemical changes. Various
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“A brief history of chemical warfare” By Harold Maass For more than 2‚000 years. As early as 600 B.C.‚ the Athenians poisoned the wells of the Spartans‚ who later tried lobbing burning sulfur pitch over the walls of Athens‚ hoping to fill the city with toxic smoke. Genghis Khan used that same trick‚ catapulting burning sulfur pitch during his siege of fortified cities around A.D. 1200. Over the centuries‚ various armies put poisons on arrows and in bullets to make them more lethal. But it wasn’t
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My vacations always have their up and downs‚ something good and bad happens. In 2014‚ my family went to the beach in South Carolina. My family still remembers that vacation as the “ Hilton Head Disaster”. My brother and I still agree that this vacation is still our favorite. I love when my family goes on vacations together because they are fun and very interesting. On our way to the beach‚ we stopped at Dunkin Donuts and ordered coffee and donuts. My brother got a donut that he never tried before
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McDonald 1 Chemical and Biological Weapons: World at War Matthew McDonald Mrs. Jones English I 4 March 2015 McDonald 2 Chemical and Biological Weapons: World at War THESIS STATEMENT: Chemical and biological weapons are necessary because they strike fear in the enemies‚ effective in their power‚ and can be used as population control. I. Introduction A. Background Information B. Thesis Statement II. Strike fear into your enemies A. Fear of retaliation
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Abstract: The objective of Experiment 1 was to observe some chemical changes. While observing the chemical changes in elements I also experimented with household cleaners to see how much chemical properties relate to our daily lives. Chemical changes occur all around me and I go without noticing them all the time without a second thought. This experiment opens my eyes to different chemical reactions occurring around me. This experiment also shows the importance of dilution. If I did not dilute something
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The article‚ Disaster on the Mountain by Lauren Tarshis‚ is about how avalanches have impacted the mountains and people’s lives. It shows that they can be easily avoided if you are able to see the obvious hints. Avalanches have taken the life of many unprepared skiers‚ snowboarders‚ and snowmobilers. Some avalanches are bigger than others but all are potentially deadly. This article also shows how there are trainers and teachers to help people learn the hints and be able to avoid them. This tells
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Name: Keziah V. Cuyom Section: 9 - Malaya Topic: Types of Chemical Reaction A chemical reaction is a process that is usually characterized by a chemical change in which the starting materials (reactants) are different from the products. Chemical reactions tend to involve the motion of electrons‚ leading to the formation and breaking of chemical bonds. There are several different types of chemical reactions and more than one way of classifying them. Here are some common reaction types. However‚ if
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