________________________ Internal Assessment Criteria Aspect 1 Aspect 2 Aspect 3 Total DCP CE Aim: The aim of this practical is to plot and investigate the pH titration curves for the titration of a strong acid with a strong base and of a weak acid with a strong base‚ and find Ka of the weak acid. Procedure: Part I 1. Pour 30 ml of the HCl solution of unknown concentration in a 100 ml beaker. 2. Add a stirring magnet. 3. Place the beaker on the magnetic heater and activate the rotating motor but not
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Farrell cengage.com/chemistry/campbell Chapter Nine Nucleic Acids: How Structure Conveys Information Paul D. Adams • University of Arkansas Nucleic Acids • Nucleic acid: a biopolymer containing three types of monomer units • a base derived from purine or pyrimidine (nucleobases) • a monosaccharide‚ either D-ribose or 2-deoxy-D-ribose • phosphoric acid • RNA (Ribonucleic Acid) • DNA (Deoxyribonucleic Acid) Nucleic Acids • Levels of structure • 1°structure: the order of bases on
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Chapter 4: Nucleic Acids and the RNA World 1. 4.1 – What is a Nucleic Acid? * Nucleic acids are made up of monomers called nucleotides * Three components of a nucleotide: 1. Phosphate group—attached to the 5’ carbon 2. Sugar – carbonyl group and several hydroxyl groups 3. Nitrogenous base * The prime (‘) symbols indicate the carbon being is part of the sugar—not attached to the nitrogenous base. * Four different nucleotides‚ each of which contains a different nitrogenous
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the substitution of a proton with a functional group. The electrophilic aromatic substitution reaction nitration is used to nitrate methyl benzoate and acetanilide with a nitronium ion. Crystallization was used to purify the product. The melting point was used to determine its purity and the regiochemistry of the products. The methyl benzoate reaction product‚ methyl nitrobenzoate‚ was determined to be meta-substituted and the acetanilide reaction product‚ nitroacetanilide‚ was determined to be para-substituted
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Pickling and Passivating Stainless Steel Materials and Applications Series‚ Volume 4 Euro Inox Euro Inox is the European market development association for stainless steel. The members of the Euro Inox include: • European stainless steel producers • National stainless steel development associations • Development associations of the alloying element industries. The prime objectives of Euro Inox are to create awareness of the unique properties of stainless steels and to further their
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Acid Rain Acid rain occurs when Sulphur Dioxide (SO2) is released into the atmosphere by electricity generation‚ motor vehicles‚ factories and by wildfires and volcanoes. Once released‚ the sulphur dioxide reacts with water to produce sulphuric acid. This has a pH of approximately 2-3 pH. This has a dramatic effect on water dwelling wildlife. Most water dwelling creatures can’t withstand water more acidic than pH 5. This causes the mass loss of life of animals such as trout‚ perch‚ frogs and mayflies
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CHAPTER 1 Introduction Background of the Study Like many other hygiene convenience‚ shoe polish or can also be called boot polish is usually a wax ‚ cream or paste used by people to shine‚ water proof and restore the appearance of leather shoes. This extends the footwear’s life. This is made up of many kinds of chemicals and because of this; it can cause irritations‚ allergies to us. In our generation‚ shoe polish is used every day and companies produce a lot of it to meet the demands of
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one of two very similar pentose rings. Ribonucleic acids contain the sugar ribose. Deoxyribonucleic acids contain the sugar deoxyribose. The only difference between these two sugars is that deoxyribose contains one oxygen atom less than ribose. Pentose sugars are essential because they are involved in linking different nucleotides together by condensation reactions. The Nitrogen-Containing Bases There are two types of bases found in nucleic acids. The purine bases have two nitrogen containing rings
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Preparation and properties of boric acid Result The mass of borax‚ g | 10.0734 | The mass of watch glass‚ g | 36.2842 | The mass of watch glass with product‚ g | 39.9803 | The mass of product‚ borix acid‚ g | 3.6961 | Test | Result | Boric acid is dissolved in water and methyl red indicator is added. | Pink solution is observed | Mannitol is dissolved in water and methyl red indicator is added. | Pink solution is observed | Both solution is added together | The colour of solution
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Essential Fatty Acids (EFAs) are fats that are required by the human body‚ but cannot be made by the body; therefore they must be obtained from external forces such as food. EFAs are the building blocks of all fats and oils and are required for both metabolic processes and for fuel. EFAs form the main component in the fats carried in our blood stream (triglycerides)‚ fats stored in our bodies and of cell membranes (phospholipids). (Erasmus‚ 1993)‚ (Wikipedia‚ Essential Fatty Acids‚ 2012) Two fundamental
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