11/10/2014 experiment 1 Analysis of Commercial Vitamin C Tablets Objective To employ titration technique to determine the content of vitamin C in commercial tablets using volumetric analysis and compare it with the manufacturers’ specifications. Introduction Deficiency of essential antioxidant Vitamin C in human will lead to scurvy. In this experiment‚ the vitamin C content of commercial tablets is determined and then compared with the manufacturers’ specifications. Vitamin C‚ ascorbic acid C6H8O6
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has 3 variant prokaryotic strains. HOW DO THEY AFFECT HUMANS AND WHY DO WE CARE? Chlamydia is the most common sexually transmitted disease in the world. It is estimated that there were 92‚000‚000 new cases reported in 2009. The 3 strains of c. Trachamotis are trachoma which affects the eyes‚ urethritis which affects the urethra and cervix and lymphogranuloma venereum‚ which affects the human lymph system. It causes numerous diseases including prostatitis‚ epiditimytisis‚ proctitis and infertility
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and the use of innocence to make a bad situation better. In Night there is always a negative outlook on what will happen next. They lost their humanity when they entered the camps and he could no longer look at himself as still human. Weisel states‚ “As we ran‚ they threw the clothes at us: pants‚ jackets‚ shirt . . . In a few seconds‚ we had ceased to be men” (37). When Elie first entered the camp‚ he could tell this was going to be a life or death situation. Nothing about this is happy and the
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If you have questions specific to your family‚ please see me individually. We will discuss the assignment in class. This assignment is designed to give you practice in completing a genogram and to be an exercise in continued self-awareness. 1. Thoroughly MAP your family structure. Use the symbols and guidelines discussed in class and in readings. 2. Record important information directly on the genogram. Include dates and categories of significant family events‚ such as births‚ deaths‚ marriages
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Research Question: How the amount of vitamin C in fruit juices affects its freshness and till what extent is the information provided on the pack by manufacturers is reliable? Background Information: Hypothesis: -fresh juices have more vitamin C than long-life -juice that is ‘not from concentrate’ is best in terms of vitamin content -if heat destroys vitamin C then heat-treated long-life juices will have lower concentrations -if heat destroys vitamin C then boiled fruit juice will have lower
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Determination of Ascorbic Acid in Vitamin C Tablets Done by: lora ID #: Date:12/3/2011 Objectives: The aim of this experiment is to determine the weight of ascorbic acid in three vitamin C tablets by titrating it directly with KBrO3‚ then back titration by Na2S2O3. Introduction: Vitamin C is a weak acid and a water soluble substance and it is often called ascorbic acid. It is useful for many biological activities and main functions such as: it is used to provide reducing equivalents for biochemical
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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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of Extraversion vs. Introversion on Iranian EFL Learners’ Writing Ability. Indian Journal of Fundamental and Applied Life Sciences‚ 4(1)‚ 119-128 Meenakshi‚ K.‚ Zafar‚ S. (2011) . A Study on the Relationship Between Extroversion-Introversion and Risk-taking in the Context of Second Language Acquisition. International Journal of Research Studies in Language Learning‚ 1‚ 33-40 Sharp‚ A. (2008) . Personality and Second Language Learning. Asian Social Science Journal‚ 4‚ 17-25
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Directions 1. Some of the questions/programs are required to be typed‚ complied‚ run and then observed. 2. If possible try experimenting with concepts revealed by each question. 3. There are 20 objective type questions on ANSI C. PART - A With every use of a memory allocation function‚ what function should be used to release allocated memory which is no longer needed? a.) b.) c.) d.) unalloc() dealloc() release() free() What will print when the sample code above is executed? a.) b.) c.) d.) y=
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