Extraction and analysis of two compounds from unknown solution C ABSTRACT Liquid C and solid C were both extracted from unknown solution by first using chemically active liquid-liquid extract‚ followed by vacuum filtration. Liquid C and solid C were then purified with the use of simple distillation and recrystallization respectively. Through the process of recrystallization‚ the percentage purity of solid C was found to be 6.01%. The melting point range of purified solid C was 117.0 – 119
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Vitamin Name Deficiency effects’ Vitamin B1 thiamine Deficiency causes beriberi. Symptoms of this disease of the nervous system include weight loss‚ emotional disturbances‚ Wernicke’s encephalopathy (impaired sensory perception)‚ weakness and pain in the limbs‚ periods of irregular heartbeat‚ and edema (swelling of bodily tissues). Heart failure and death may occur in advanced cases. Chronic thiamine deficiency can also cause Korsakoff’s syndrome‚ an irreversible psychosis characterized by amnesia
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Abstract By using acid-base titration‚ we determined the suitability of phenolphthalein and methyl red as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein’s color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric acid had an equivalence point that was also out of
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EXPERIMENT 8 QUANTITATIVE DETERMINATION IODOMETRIC TITRATION OF COPPER CONCENTRATION IN AQUEOUS SOLUTION B Y RESULTS AND DISCUSSION Considered as moderately weak oxidizing agent‚ Iodine was used for the determination of strong reductants. Standard iodine solutions were found to have smaller electrode potentials as compared with the other oxidants‚ gaining them the advantage of imparting a degree of selectivity essential in the determination of strong reducing agents amid the presence
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Acid-Base Titration Using a pH Meter Bradley Holloway and Jennifer Parker Period 6 April 16‚ 2013 Introduction: In chemistry‚ the ability to find molarities of acidic and basic solutions is a convenient way to convert between moles of solute and the volumes of their solutions. Through the process of titration‚ the molarity of these acids and bases can be found to a high level of precision. To begin titration‚ one solution is added to a second solution slowly until a certain point
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Joan Holtz (C) c a s e r e p o r t \ Prepared by MBAxii G7 Mohamad Nizam Jaafar Farithal B Sahari Mizwan Mohamad Shahimin Mohaini Ahmad Basri Submitted to Dr Nik Nazli Nik Ahmad On 18th August 2002 TABLE OF CONTENTS | CONTENTS | | | PAGE NO. | | Abstract of the case | | | 3 | | | | | | | Scenario 1 : On self-constructed building | | | 4 | | Scenario 2 : On purchase land and building
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Post Classical Religion Compare and Contrast Essay In the post classical world there were various aspects that made an impact on civilizations. One crucial aspects was religion. Religion was the feature that societies looked to for guidance and sometimes even governance. This was especially true in Medieval Europe and the Byzantine Empire‚ where they both saw Christianity as a great influence on their societies. Although this is true for both‚ religion in Medieval Europe and the Byzantine Empire
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Cytochrome-C Comparison Brief Description: The molecular clock refers to mutations in DNA nucleotide sequence of genes occurring at a constant rate over time. The greater the difference in nucleotide sequence between two individuals of different species‚ the greater the amount of time has passed since they diverged from a common ancestor. The molecular clock helps to provide evidence to support conclusions previously based on comparative morphology and fossil records. Hypothesis: One hypothesis
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4. VITAMIN CARTEL CASE 4.1 EU INVESTIGATION FINDINGS According to the World Trade Organization (WTO) (2001)‚ in 1989 two European vitamins manufacturers Roche and BASF started the cartels. They decided to increase the prices of vitamins A and E gradually to a geographic division to the world’s markets. Roche and BASF skillfully garnered over seventy percent of sales in these markets and later successfully co-opted their principal rivals‚ Rhone-Poulenc and Eisai. Through 1991‚ these four companies
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Anna Quindlen wrote “The C Word in the Hallways” 6 months after the tragedy in Columbine. As a parent‚ she has strong concerns in the way mental health is treated. Her satirical view of how health treatment needs to change criticizes the current way it is‚ expresses her disappointment in societal assumptions‚ and provides solutions to this ongoing problem. Through her use of imagery‚ alliterations‚ and anaphora‚ Quindlen appeals to her audience’s emotions as she discusses the need for change in the
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