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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Standardization and Titration of an Unknown Organic Acid Overview: Methods for counting the number of molecules in a sample is a major emphasis of laboratory work. In this experiment we will use the method of titration to count the number of acid molecules in a solution. Measuring mass is a relatively easy procedure to do in the lab (although a balance is expensive). Counting the number of particles requires more effort. Molecular counting can be done by setting an unknown amount of a substance equal to
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Determining an Unknown Through Deferential Stains and Biochemical Tests Introduction There are many reasons for knowing the identity of microorganisms. The reasons range from knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification
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__________________________________________ Explore the Value of Experiential Learning: The Second Time Around Learning and Development is a theme that interest me‚ therefore when handed our HRM course structure at the beginning of term I quickly decided on that theme out of the 10 on offer. We learnt that we were to present and write a paper on a chosen topic within that theme. Choosing a topic proved difficult because I did not know what any of the topics meant and as deadline day loomed
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Classification for Functional Groups Alcohols Lucas test (Differentiates primary‚ secondary‚ and tertiary alcohols) Reagent: ZnCl2 in conc. HCl Observation: Rate of reaction (tertiary alcohol> secondary alcohol> primary alcohol) Procedure: 2mL Lucas Reagent in test tube+ 3-4 drops of alcohol‚ stopper‚ shake vigorously‚ NOTE time required (less than 10m mins only) to form an emulsion or separate layers. Oxidation (Confirms if alcohol is oxidizable: presence of H in C-OH bond) Reagent:
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Explore the theme of loneliness in Of Mice and Men Whilst reading the novel‚ ‘Of Mice and Men’ it becomes apparent that loneliness‚ is one of the main themes that is carried throughout the book. This theme is symbolised in almost every character‚ each expressing loneliness in their own way. From Crooks‚ the misunderstood black man who wasn’t always discriminated against; Curley’s Wife‚ the only woman on the ranch who had dreams of being something much bigger‚ to the leading characters George and
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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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’Explore Golding’s presentation of Jack in ’Lord of the Flies’ and their significance in the text as a whole’ In this essay I will be looking at how Golding presents the character of Jack. Written after the chaos of the second world war‚ Golding uses Jack as a way to portray evil in the novel and he has many similarities to powerful world war 2 dictators. Concentrating on how Jack changes throughout the novel as the boys descend into savagery‚ specifically looking at the beginning‚ middle 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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INTRODUCTION The indigenous peoples of the Philippines consist of a large number of indigenous ethnic groups living in the country. They are the descendants of the original inhabitants of the Philippines who have managed to resist centuries of Spanish and United States colonization and in the process have retained their customs and traditions. The Philippine government succeeded in establishing a number of protected for tribal groups. Indigenous people were expected to speak their native
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