CHEM XXI Project Report Worksheet (4 pages max.) Experiment title: How Do We Identify an Unknown Substance? Guiding questions: State the question or questions that that you were trying to answer in this lab. How do you determine the two unknown types of plastic? What are the two unknown plastics? Safety considerations: Briefly describe the safety measures you had to take to perform the experiments. Before entering the lab‚ I put on my lab coat and practiced using
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Investment Appraisal under Uncertainty Question a Internal Memo Date: November 15‚ 2012 Subject: Investment report To: Mr. Michael the Chief Engineer Mr. Richard the accountant Mrs. Rachel the economist From: Alex the Managing Director Hello‚ everyone‚ I would like to present an introduction and brief description of the investment project to you‚ and wish to make sense as much as possible. To begin with‚ this project
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Experimental Design Bio 1110 ! ! Background: Plants need water to survive. Water makes up 80-95% of the mass in plant tissues. Transpiration is the loss of water from plants in vapor form. 95% of the water is absorbed from the soil for transpiration and 5% is absorbed during photosynthesis for producing necessary carbohydrates for growth. The rate of transpiration is dependent on the amount of water in which is available within the plant‚ soil‚ and on sufficient energy to vaporize water
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by measuring the oxygen consumption and change in gas volume of respirometers containing either germinating or non-germinating seeds at different temperatures to measure the rate of respiration of these beans at different temperatures. Hypothesis 1.Germinating seeds have a higher rate of respiration as compared to non-germinating seeds and the glass beads. 2.As temperature increase‚ rate of respiration increase‚ greater increase in volume of respirometers. Materials 2 thermometers 120 germinating
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Objective 1. To demonstrate the relationship between the pressure and temperature of saturated steam in equilibrium with water. 2. To determine the vapour pressure curve. Introduction Properties of a fluid can change when heat and work are applied to it. There’s an interchange between the fluid and its surroundings when heat and work are applied according to the study of thermodynamics. Substances such as gases and vapors are often referred as P-V-T substances. Theory: An ideal gas
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us. Gilbert offered an explanation for why in 2009‚ Americans seemed to be growing unhappier despite relative fiscal luxury. Gilbert said‚ “..human beings find uncertainty more painful than the things they’re uncertain about.” His point is that ambiguity makes us nervous‚ which is an assertion that agrees with my own experiences. Uncertainty is a major cause of unhappiness‚ on both a universal and private scale. For an example of the former‚ the situation Gilbert wrote about‚ in which Americans were
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M AgNO3 were used. The balanced equation for the reaction is: FeSO4 (aq) + 2 AgNO3 (aq) ↔ Fe(NO3)2 (aq) + Ag2SO4 (s) It has a net equation of: Fe2+(aq) + Ag+(aq) ↔ Fe3+(aq) + Ag(s) This part of the experiment required centrifugation of the solution. This was done to completely separate the precipitate from the supernate for easier decantation process. In determining the presence of Fe2+ in the supernate‚ 0.10 M of K3Fe(CN)6 was used . The resulting
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Johnny Mendez 9a2 Age of Uncertainty Paper During the aftermath of WWI‚ the world was recovering from massive attacks and damages through out the war years. During this time things started changing for the better‚ advancements in certain fields such as technology and science‚ and for the worse‚ events and leaders (Hitler‚ Mussolini) leading to World War II. People were experiencing new ideas that revolutionaries
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Austin Vandermey GS-1140 April 4th‚ 2015 Experiment We as a society have one big problem on our hands. This problem is sleep deprivation because there are not enough hours in the day to get stuff done. Between work‚ school‚ family‚ and leisure it seems like we do not have enough time to get are daily tasks done let alone have time for sleep. It is recommended by the U.S Department of Health that people need a solid eight hours of sleep to maintain good health. I don’t know about you
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EXPERIMENTAL ESTIMATES OF EDUCATION PRODUCTION FUNCTIONS* ALAN B. KRUEGER This paper analyzes data on 11‚600 students and their teachers who were randomly assigned to different size classes from kindergarten through third grade. Statistical methods are used to adjust for nonrandom attrition and transitions between classes. The main conclusions are (1) on average‚ performance on standardized tests increases by four percentile points the first year students attend small classes; (2) the test score
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