10/23/2012 Case Study 1 (Too much of a good thing)) The definition of OSMOSIS is the movement of a solvent through a membrane separating two solutions of different concentrations. The solvent from the side of weaker concentration usually moves to the side of the stronger concentration‚ diluting it‚ until the concentrations of the solutions are equal on both sides of the membrane. Michael made numerous mistakes in this story that caused the corn fields to die. The first mistake Michael made
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Questions: 1. One mole of a compound A‚ with vapor pressure 400mmHg at 50oC‚ mixed with 3 moles of compound B‚ with vapor pressure 480mmHg at 50oC to form a homogeneous solution. What is the vapor pressure of mixture at 50oC? XA =moles of A\total No. of moles XA =1\4 XB=3\4 Ptotal=PAoXA+PBoXB =400*1\4 + 480*3\4 = 460mmHg 2. Why should a distilling flask be filled not less than 1\3 filled or more than 2\3 full? This is to allow the liquid being heated room to expand as it turns
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given temperature. Solubility is defined as the ability of a substance to dissolve in another substance. Solutions are mixtures containing a solute (substance being dissolved) and a solvent (material that dissolves another substance). Solutes and solvents can be solids‚ liquids‚ or gases. The most common solutions‚ however‚ have liquid solvents‚ particularly water. There are many solutions that students encounter regularly‚ such as apple juice‚ soda‚ carbonated water‚ or salt water‚ in which the
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1- An office building contains 27 floors and has 37 offices on each floor. How many offices are in the building? Solution: Total number of offices is 27 * 37 =999 2- A particular brand of shirt comes in 12 colors‚ has a male version and a female version‚ andcomes in three sizes for each sex. How many different types of this shirt are made? Solution: Using product rule‚ we have 12×2×3 = 72 different types of this shirt. 3. Use a tree diagram to find the number of bit strings of length four
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pressure be generated if you had 9 mM glucose on one side of a 200 MWCO membrane and 9 mM NaCl on the other side? If so‚ which solution was generating the pressure? No‚ because both glucose and NaCl are diffusible with a 200 MWCO membrane. Would pressure be generated if you had 9 mM albumin on one side of a 200 MWCO membrane and 9 mM NaCl on the other side? If so‚ which solution was generating the pressure? Yes‚ the albumin would generate the pressure‚ because it does not diffuse. ACTIVITY 5: Filtration
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University of Oxford Computing Laboratory MSc Computer Science Dissertation Automatic Generation of Control Flow Hijacking Exploits for Software Vulnerabilities Author: Sean Heelan Supervisor: Dr. Daniel Kroening September 3‚ 2009 Contents List of Figures v List of Tables vii List of Code Listings ix Acknowledgements xi Abstract 1 1 Introduction 3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Motivation . . .
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and subscription information: http://www.tandfonline.com/loi/vsoc20 The Capacity to Be Alone as a Stress Buffer Reed Larson & Meery Lee a a a Department of Human and Community Development‚ University of Illinois‚ Urbana/Champaign‚ USA Version of record first published: 01 Jul 2010. To cite this article: Reed Larson & Meery Lee (1996): The Capacity to Be Alone as a Stress Buffer‚ The Journal of Social Psychology‚ 136:1‚ 5-16 To link to this article: http://dx.doi.org/10.1080/00224545.1996
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potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The RBC in unknown solution B appeared to be swollen‚ therefor‚ the tonicity of unknown solution B was hypotonic. Unknown solution C showed no change to the RBC shape
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tubing and different concentrations of sucrose solutions‚ and to help one better understand what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis If the four dialysis tubes containing different concentrations of sucrose are all placed in their appropriate solutions for 20 minutes‚ then my predictions are as follows: The 1% in 1% sugar solution will keep a constant weight and stay the same size. The 1% in 50% solution will shrink‚ due to the higher concentration
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purpose of this lab is to observe principles of homeostasis and osmosis in action. The results of this experiment showed that eggs placed in a 4 M sucrose solution lost mass over time and had the greatest percent difference in mass compared to the eggs in other solutions‚ with the 4 M egg having an average of -25.13% difference in mass. The 0.0 M solution egg only had a 12.28 average percent difference in mass‚ the 0.5 M egg with 10.39%‚ and the 1 M egg with the least percent difference in mass‚ 6.40%
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