CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT: DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM = 176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+
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percentage of vitamin C (ascorbic acid ) between the fresh orange juice and artificial orange juice (Sunkist). Problem statement : Does have different types of fruit juice contain similar amount of vitamin c ? Objevtive: To analyse the concentration and percentage of different food sample by using titration method and state whether the percentage and concentration of vitamin C. Methodology: Theory : DCPIP can also be used as an indicator for Vitamin C. If vitamin C‚ which is a good reducing
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University of Phoenix Material Appendix C Models of Abnormality Psychologists use several different models to explain abnormal behavior. These different models have created shifts in values and beliefs as well as improvements in clinical research. These differences in ideas mean that the different models are sometimes in conflict with one another. People who follow one model often point out where another model fails in its interpretations‚ investigations‚ and treatment methods. Read the brief
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C# Programming C# Programming 1 Table of Contents 1. Strings‚ Exceptions‚ and Events The String Class Arrays Collections Overview of Exception Handling Throwing and Catching Exceptions .NET Framework Class Library Exceptions Creating Your Own Exceptions Events 2. Introduction to Windows Forms Introduction What Is a Form? Creating a Windows Form in a Text Editor Creating a Form in Visual Studio .NET The Windows Forms Designer Forms Form Properties Form Events Using Visual
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1. A. Fear B. “I am frightened‚ Mama…There is a rumor going around that they have been taken away. Are they going to take us away too? Please tell me‚ Mama” (Appleman-Jurman 9). C. This quote expresses fear in how Alicia has been noticing her Jewish schoolmates going missing. She is afraid these awful things may begin to happen to her and her family. By asking her mother she shows she is concerned. There is also a sense of dramatic irony to this quote because the readers know that her fate will
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Hepatitis C is a liver disease that is caused by hepatitis C virus. The virus enters into the liver cell‚ use the cell’s genetic to make copies of itself which then affects more cells. Causes Hepatitis C is usually transmitted through blood to blood contacts. It can be transmitted by sharing needles when injecting‚ toothbrushes and razors‚ tattoo or body piercing with equipment that has not been properly sterilized. It can also be sexually transmitted. It is not passed on by everyday contact
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March‚ 2011 Sin City: Is it Film Noir? Controversial topics are brought to the table when speaking of Hollywood film Sin City. The story line appears to be set in the 50s and follows three protagonist characters that are all linked through their femme fatal characters. The filming technique displayed brings rise to the question of whether the movie is film noir or not. Numerous characteristics found in other noir films are traced out in the motion picture. Sin City proves to be a modern take on film
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Topics in C Programming Bob Hain Introduction This document is not intended to be a text on C programming. Because many of you may not have had the opportunity to use or practice C programming‚ we are attempting to provide a brief description of some of the elements of C which you will need in your laboratory work. We will leave out many topics but will try to provide simple‚ although sometimes incomplete‚ explanations of some of the basic elements of C. Why C? The computer industry is changing
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Garrison 13e Practice Exam – Chapter 3 Print these pages. Answer each of the following questions‚ explaining your answers or showing your work‚ as appropriate‚ and then compare your solutions to those provided at the end of the practice exam. 1. Closet Depot‚ Inc. had the following estimated costs for next year: Sales commissions $600‚000 Direct labor 440‚000 Salary of production supervisor 280‚000 Rent on factory equipment 128‚000 Direct materials 120‚000 Advertising expense
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CHEMALITE‚ INC (B) Executive Summary: Bennett Alexander‚ a chemical engineer founded Chemalite‚ Inc. in late 1990. The company was set up to manufacture and sell the Chemalite. The projected financial statements for the year 1992 were made to study the performance of the company in March 1991. The balance sheet and income statement of current year and projected year were provided. | |December 31‚ 1991 (Actual) |December
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