effect of citric and buffered lactic acids on the flavour of hard-boiled sweets and the effect of acids on various flavours in high temperature applications. Introduction Materials and Methods An amount of water‚ sugar and glucose syrup of 30g‚ 100g and 70g were weighed respectively into a stainless steel pot. The mixture was then heated and removed immediately from the induction cooker after reaching the desired temperature of 145˚C. Flavours of 0.51g and acid of 1.20g was added immediately afterwards
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English Composition 102 April 27‚ 2012 Morality: Manner‚ Character and Proper Behavior INTRODUCTION In his film A Clockwork Orange‚ Stanley Kubrick‚ an American film director and producer‚ creates a futuristic London where youth gang violence and other social subjects are portrayed. The main character‚ Alex DeLarge‚ is a sociopath who likes listening to Beethoven and is fascinated with raping women‚ amongst other things he is also the leader of the gang‚ which consists of Dim‚ Georgie and
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A Clockwork Orange The freedom of choice and the rehabilitating form of corrections encase the realm of A Clockwork Orange‚ by Anthony Burgess. It produces the question about man’s free will and the ability to choose one’s destiny‚ good or evil. "If he can only perform good or only perform evil‚ then he is a clockwork orange-meaning that he has the appearance of an organism lovely with colour and juice but is in fact only a clockwork toy to be wound up by God or the Devil or State"(Burgess ix)
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Acids‚ Bases‚ and pH Lab In this lab the testing of whether or not a substance was an acid or a base occurred. Each substance was tested with the indicators red litmus paper‚ blue litmus paper‚ pH paper‚ phenolthalein‚ bromthymol blue‚ and phenol red. While the substances were tested the group noticed that the substances tested with the red and blue litmus paper‚ the phenolthatein‚ bronthmol blue were the easiest to interpret. The color changes that occurred when this indicator was put into a substance
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Gluck uses strong diction to create vivid images in order to convey the hatred and helplessness that is the core of the character. Although the diction is relatively colloquial‚ there are some prominent words‚ which are utilized to exhibit the woman’s emotions. The first two lines of the poem are bursting with powerful lexis‚ "It is not the moon‚ I tell you. / It is these flowers..." (1-2). The woman hates men‚ and uses influential words to aid in her belief. The word moon suggests power. The subject
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Title:Extraction:Extraction with acid and alkaline Objective: 1. To recover benzoic acid and p-dichlorobenzene from its mixture using acid-alkaline extraction. 2. To determine the percentage recovery and melting point of benzoic acid and p-diclorobenzene. Apparatus:Separatory funnel(250mL)‚Buchner funnel‚beaker. Materials:Benzoic acid‚p-dichlorobenzene‚ether‚10% NaOH‚conc.HCl‚distilled water‚ anhydrous CaCl2. Introduction: Organic compounds in an aqueous mixture can be separated
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Citric Acid Names of chemical substance- Chemical formula: C6H8O7. Elements present in citric acid are; carbon‚ hydrogen and oxygen. Bonding- All the elements in citric acid are non-metals. Citric acid has a covalent bond type. History- in the 8th century jabir ibn hayyar a Persian alchemist was credited with the discovery of citric acid. in 1784 the separation of citric acid from citrus fruits occurred when Swedish chemist Carl Wilhelm Scheele separated citric acid from lemon juice. The next
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pipette. then it will be emptied into a conical flask add three to four drops of an indicator of methyl orange solution to the conical flask and note it will show a colour change. After that record the initial reading of the burette and making sure that all your burette readings must be to an appropriate precision. Titrate the contents of the conical flask by adding to it 0.100 mole dm3 hydrochloric acid from the burette. Add the solution slowly. Swire the flask gently to mix the contents at the end
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to determine the rate constants‚ k1‚ for the methyl acetate hydrolysis reaction at 25 °C and 35 °C‚ as well as the overall activation energy of the reaction. Methods Methyl acetate was placed in an HCl solution‚ in which it reacts with water to form acetic acid over time. At each time interval‚ an aliquot of the mixture was removed for titration against NaOH to determine the concentration of the acetic acid produced. From the amount of acetic acid produced overtime‚ the rate constant‚ k1‚ can
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Acids And BAses Acids And BAses 8.1 8.2 8.3 8.4 18.1 18.2 18.3 18.4 18.5 Theories of acids and bases Properties of acids and bases Strong and weak acids & bases The pH scale Calculations involving acids and bases (AHL) Buffer solutions (AHL) Salt hydrolysis (AHL) Acid-base titrations (AHL) Indicators (AHL) 8 8.1 THeORies OF Acids And BAses 8.1.1 Define acids and bases according to the Brønsted–Lowry and Lewis theories. 8.1.2 Deduce whether or not a species could act as a Brønsted–Lowry
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