Erin Bolton Chemistry Lab Report April 29‚ 2015 Lab: Reaction Rates Introduction: In this experiment we studied the reaction of potassium persulfate‚ K2S2O8‚ with potassium iodide‚ KI. All chemical reactions have an energy barrier to overcome before the reaction will proceed. We will record data based on the concentration‚ temperature and catalyst for each experiment. Once this has been completed it will be graphed. Procedure: Due to the chemicals being used having hazard gloves are used
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IB Biology Internal Assessment: Yeast Fermentation Rates Planning(a) Question- Growth: What is the effect on Yeast Growth/Expansion during fermentation when mixed in water of varying temperatures? Hypothesis- Temperatures above or below the recommended fermentation temperatures will contain less‚ or be void of growth‚ either due to inactivation or to yeast death. Variables- | | | | |
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Rate of Osmosis Investigation Lab Title: A simple heading referring to your investigation Abstract: Write this section last! It is a brief paragraph or 2 which outlines the purpose‚ the method‚ the pattern of results and the conclusion you reached. It is an overall snapshot of the whole investigation. Introduction: Purpose: Biological Background: All living organisms are made of cells which are surrounded by a membrane. The cell membrane has many functions but the
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a stroke. In this‚ 610‚000 are first and new and 185‚000 are recurrent strokes. Nearly 75% of all strokes occur in people above the age of 65. The risk of having a stroke increases after the age of 55 but it can occur at any age. Stroke mortality rates are higher for African-Americans than for whites‚ even at younger ages (Mozaffarian et al.‚ 2015). The number of people living with stroke is expected to increase by 4 million by the year 2030 (Heidenreich et al.‚ 2011). Clinical types and subtypes
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causes of turnover‚ negative effects of turnover‚ and offers suggestions for curtailing the rate of turnover in the industry. The problem of this article is that employee turnover continues to plague the leisure‚ tourism and hospitality industry as keeping and retaining employees become a huge issue. A common estimate is that employee turnover costs 1.5 times the departing employee’s income. Unemployment rate rose from 7.6 to 8.1%‚ the Bureau of Labor Statistics of the U.S. Department of Labor reported
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| |Initial investment |$12‚000 |$12‚000 | |Annual rate of return | | |Pessimistic |16% |10% | |Most likely |20% |20% | |Optimistic |24% |30% | a. Determine the range of the rates of return for each of the two projects. b. Which project is less risky? Why? c. If
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disaster‚ August 16th‚ 1992 Hurricane Andrew was formed This piece‚ you will be learning all about Hurricane Andrew. I will be explaining what a hurricane is‚ what was the damage caused‚ and how meteorologists track the hurricane. It got up to a category five and the top wind speeds were 175 mph. It was one of the worst‚ most disastrous hurricane of all time. What is a hurricane and how does it form? A hurricane is a type of severe weather that can rip houses to shreds and destroy many things with
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Purpose: The purpose of the ‘Rates of Reactions’ lab is to learn how to plan an investigative lab without outside help and to learn about the ‘Rates of Reactions’. This lab will require students to take responsibility for their own learning and use their prior knowledge to aid in the completion of this lab. In the lab prepared below‚ students will be learning about Rates of Reaction with varying concentrations of Alka-Seltzer with water. Hypothesis: I believe that the more water added to the canister
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more fixated on culinary adventures‚ cooking shows‚ and innovative concoctions‚ we at the same time‚ are watching the prevalence of our obesity rates grow tenfold. American’s caloric intake has increased 15% 1984 to 1997. It is likely that this upward trend has continued due to the growing portion sizes of food at dining restaurants as well as increased processing and artificial additives introduced in our food. Another contributing factor is the glamorization of food and food products. Constant
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in Pakistan by Special Forces. Bin Laden was responsible for the 9/11 attacks and was eventually found and killed. I was 3 years old when the 9/11 attacks happened. At the time‚ I was too young to remember or to understand what was going on. When I became old enough to know what happened‚ I got scared because I thought that there could be another terrorist attack any day. I think that security should be a little better at checking people at airports considering the hijackers easily snuck weapons past
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