of biological system is usually preferred as the pH system‚ which determines the pH level of dilute aqueous solutions. In this laboratory‚ the data collected from the experiment will be used to graph the titration curves which help to identify an unknown amino acid. IntroductionAmino acids are simple monomers which are strung together to form proteins. Amino acids play a key cellular role in structure and function. Proteins themselves participate in nearly every physiological event in the cell. Since
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Using a Dumas method‚ you are asked to identify the unknown pure liquid by comparing the molar masses of the given possible substances (ethanol‚ methanol‚ isopropanol‚ acetone). Introduction Dumas Method allows us to measure the molar mass of the substance‚ using the Ideal Gas Law. The Ideal Gas Law‚ PV=nRT‚ explains the behaviour of the gases that are near 100kPa and in the room temperature. This equation shows the product of the pressure(P) and volume(V) equals to the product of the number of moles(n)
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to cocoa bottom and an unknown girl notes to help on coursework. An unknown girl A traditional indian market scene‚ set in the evening‚ it was to hot to have markets in the day‚ lit up with neon lights She tries to capture the moment‚ she is getting involved in the culture by having her hand hennad. It is a darker shade of your own skin‚ suttle. She is watching this girl ‘icing my hand’(verb(icing)) ‘in the evening bazaar for a few rupees’ india money Unknown girl refers to the lady
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Tuan Tai 1 Duong Tran Tuan Tai Professor Pham Quoc Loc ENGL - 1302 17 September 2014 Some nice quotes from unknown authors In my view‚ everyone love reading always notes their favorite quotes for their life’s guideline. To me‚ I am not really love reading but I love collecting the nice quotes. The quotes bring many meaningful‚ some are evident but some are vague. In addition‚ I also like to collect quotes from the Internet because I do not need to read whole a book and some of them never appear
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Identification and Recreation of Unknown White Compound #643p November 13‚ 2012 INTRODUCTION: The identity of the unknown solid white compound is determined and verified through a series of tests which uncover physical and chemical properties necessary for identification. A new sample of the same compound is then created to further prove the accuracy of the identification. The compound must be identified in order to be used. For example‚ KCl is used in medicine‚ scientific applications‚ and
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determined that Unknown A‚ B‚ C‚ and D are to be identified as the Sprite‚ burger‚ fries‚ and bun‚ respectively. Each Unknown provided evidence that we eventually used to match to each element of the meal. Along with the lab data‚ our prior knowledge also led us to our results. We were able to determine that Unknown A is the Sprite due to the fact that every test was negative except for simple sugars‚ a macromolecule that the majority of sodas contain. We determined that Unknown C were the
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Determination of An Unknown Amino Acid From Titration Abstract Experiment 11 used a titration curve to determine the identity of an unknown amino acid. The initial pH of the solution was 1.96‚ and the pKa’s found experimentally were 2.0‚ 4.0‚ and 9.85. The accepted pKa values were found to be 2.10‚ 4.07‚ and 9.47. The molecular weight was calculated to be 176.3 while the accepted value was found to be 183.5. The identity of the unknown amino acid was established to be glutamic acid‚
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Ever since I was a little girl I dreamed about traveling overseas. Strange lands‚ exciting places‚ and new cultures have always fascinated me. I’ve always wondered what it would be like to speak another language‚ to grow up learning different customs‚ or to live in a completely different way than I do now. This past summer my dream finally came true. I got to travel to England‚ France‚ Switzerland‚ and Germany with Mme. Kelly and five other girls‚ and suddenly the world was at my fingertips. <br> <br>England’s
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Experiment 5- Standardization of NaOH and determination of Molarity of an unknown Acid Objectives 1. Preparation and standardization of a 0.1M NaOH solution 2. To learn the technique of titration 3. Determination of the concentration of an unknown diprotic acid. Introduction Titration can be traced to the origins of volumetric analysis‚ which began in the late eighteenth century. Study of analytical chemistry began in France and the first burette was made by Francois Antoine Henri
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Determining the Unknown Concentration of NaHCO3 (aq) Through Titration Introduction Titration is the accurate addition of a titrant- solution in a burette- into a measured volume of a sample (Kessel‚ 2003). There are many different types of titration‚ such as acid-base reaction‚ redox reactions‚ precipitation reaction and more (Dohrman). In this lab an acid base titration will be explored. In an acid-base titration‚ the concentration of an acid or base is unknown and is determined by the adding
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