Experiment to determine the ethanol content of wine
Experiment to Determine Ethanol Content of Wine The purpose of this experiment is to determine the ethanol content of each of the wines and compare the value determined to the value quoted on the label. These results can then be used to conclude which region is more accurate in quoting the value of the ethanol content of the wine. This experiment takes advantage of the fact that ethanol is less dense than water in solution. The density of ethanol at 20°C is 0.789 g/cm3 while the density of water at the same temperature is 0.998 g/cm3. It then follows that different solutions of ethanol and water will have different densities also, because the relative volume of ethanol increases and water decreases so the density of higher percentage ethanol solutions will be less than the density of lower percentage ethanol solutions. This occurs because water molecules are much smaller than ethanol molecule, meaning more water molecules can "pack" into a smaller volume than ethanol molecules, meaning there is more mass per unit volume of water compared to ethanol, meaning it has a higher density. In this experiment, solutions of ethanol in water were made up, going from 0% to 20%. These were then weighed, and the density of the ethanol was calculated. From this, a graph of percentage ethanol solution against density was made. This graphs later compared to the density of the wine, so
Analysing the vitamin C content in different fruit juices
Title : The Vitamin C Content in Fruit Juices Name : Yii Seng Ong Date : 28 August 2011 Class : 12M15 Student ID : 2011200378 Name of lecturer : Madam Ida Muryany binti Md. Yasin Objective . To determine and compare the concentration of vitamin C in different kind of fruit juices 2. To determine and compare the concentration of vitamin C in freshly prepared fruit juices and carton fruit juices Introduction . Vitamin C Vitamin C or also can be known as ascorbic acid is the elonic form of 3-oxo-L-gulofuranolactone. It can be synthesized from glucose or extracted from other plant sources such as blackcurrants, rose hips or citrus fruits. The empirical formula for vitamin C is C6H8O6. Other than that, the molecular weight for ascorbic acid is 176.1. Its melting point is about 190°C( with decomposition). The appearance is white to slightly yellowish crystalline powder. It is practically odourless, with a strong acidic property and a sour taste. Figure 1 : 2D structure of vitamin C Figure 2 : 3D structure of vitamin C Generally, vitamins are a group of complex organic compounds which play an essential role in animal metabolic process but which the animal cannot synthesis. Vitamins do not provide energy however, in their absence the animal develops certain deficiency diseases or other
Data Analysis - Osmosis in Potatoes
G.C.S.E. Biology Data Analysis - Osmosis in Potato Chips Contents Page . Aim.............................................................................................................. 3 2. Results........................................................................................................ 3 2.1 Tables 2.2 Graphs 3. Analysis....................................................................................................... 5 4. Evaluation................................................................................................... 6 5. Conclusion.................................................................................................. 7 6. Bibliography................................................................................................ 8 . AIM The purpose of this experiment was to analyse the effect of osmosis in potato chips (cut slices) and then be able to explain the significance of this in the human body. I predicted that as the concentration of the solute was increased, the mass of the potato would decrease because of osmosis. 2. RESULTS 2.1 Tables Potato No. Concentration (M) Start mass (g) Finish mass (g) Change in mass (g) % change in mass Average % change in mass A1 0.0 .79 2.01 0.22 2.29 9.68 A2 0.0 .79 .94 0.15 8.38 A3 0.0 .79 .94 0.15 8.38 B1 0.5 .79 .86 0.07 3.91 5.40 B2 0.5
Unpicking the monstrous: A Psychoanalytic and Marxist analysis of Alien.
Contents Title Page: Page 2 Analysis: Pages 3-12 Conclusion: Pages 12-13 Bibliography: Page 14 Name: Liam Stott English and Film & Media Studies Level Two Unit Title: FS299 - Critical Approaches to Media Research Unit Tutor: Marc O' Day Course Leaders: Marc O' Day/Melanie Selfe Assignment 2: Negotiated Essay 'Unpicking the monstrous: A Psychoanalytic and Marxist analysis of Alien.' Barbara Creed states that the convergence of psychoanalysis and cinema studies initiated at the end of the nineteenth century. Since the 1900s, psychoanalysis has endured a complicated history because of its elusive concepts and theoretical influences, particularly in post-1970s psychoanalytic film theory. Throughout the 1970s, psychoanalysis informed and contributed to other cinematic critical approaches such as post-colonial theory, queer theory, feminist film theory and body theory (Creed in Hill and Gibson, 2000: 75-77). Alien (dir. Ridley Scott, 1979) is a significantly psychoanalytic film, symbolically underpinned by a range of psychoanalytic notions such as sexuality, the unconscious, phallicised, primal phantasies (Lebeau, 2001: 7), the woman as an actively sadistic monster and the cinematic voyeuristic male gaze at the expense of female sexual objectification (Taylor in Jancovich and Hollows, 1995: 151). However, Alien cannot only be interpreted through the critical approach
An analysis of the poetry of Wilfred Owen with specific reference to language used.
Laura Harvey 4Ng 15th January 2004 Wilfred Owen.[1893-1918] The Last Laugh. The Send Off. The Anthem for Doomed Youth. An analysis of the poetry of Wilfred Owen with specific reference to language used. Wilfred Owen was an English poet who specialised in writing about the war. Owen was born on 18th March 1893 in Oswestry. He was the son of a railway worker and the eldest of four children. Owen started his education at the Birkenhead Institute and then continued his education at the Shrewsbury Technical School. Wilfred Owen then started work as a pupil-teacher at Wyle Cop School while he prepared for his matriculation exam for the University of London. After failing to win a scholarship, in 1913, he found work as an English teacher at the Berlitz School in Bordeaux. In October 1915 he joined the army. The next he knew was that he was fighting at the Somme. He returned to England and was put in hospital only two years after he joined up in 1917 because of shellshock. Explosions from nearby shells and the content of the war caused the shellshock in general. Owen was send to Craiglockhart Hospital, in Edinburgh, and met Siegfried Sassoon, another war poet. In August 1918 Owen was declared fit and returned to the Western front. He fought at Beaurevoir-Fonsomme, where he was awarded the Military Cross.
Business in the UK case study. Adidas PEST analysis
Adidas PEST analysis Political Adidas need to be aware of the political state of the UK, the same for the all other countries where they have bases. As if the government is unstable, or there are any controversial policies, they may have a bad affect on Adidas. There is a stable political situation in the UK, as it has a democratic government, a democratic government is one that is decided, by people voting on who they want to run the country. This means that if a dictatorship was to emerge and started making decisions that the public didn't agree with they would simply be voted out at the next election. This is good for Adidas when operating in the UK, as it is fairly unlikely that the government would suddenly introduce any controversial policies. This will be good for my product as it gives it firm ground to work on.There are elections every five years in the UK, with the next one in 11 June 2015. This keeps everything functioning properly within the UK, as the government aren't very likely to introduce any controversial policies, as they would be voted out at the next election. This is good for Adidas, as it means that the government aren't very likely to introduce any drastic policies, which may affect them. The government also offers subsidies if organisations set up factories in areas of high unemployment, such as the north east of England and south Wales.An
Analysis of I Am, by John Clare
Analysis of I Am, by John Clare The poem 'I Am' by John Clare is written in the form ABABCC, except for the first verse, which is ABABAB and it is written in iambic pentameter. The structure of the three stanzas seems to be based on time, the first stanza is what is happening, he is 'live' the second is what is about to happen, what he is going 'into' and the third is what he thinks or wants to happen, what "I long for". There is a great use of punctuation, yet there are only two sentences, making the poem seem continuous, troubled and searching and without definite closure. The title of the poem is repeated four times in the first verse, but then it is not written again at all. In fact, after the first stanza, there are only five references to the writer. This suggests that the fist stanza is the most personal the one that is based most strongly on the writer. The 'I' from the poem is reflecting on his past, his life, and what is going on around him, what his life has become. The stanza seems to have a lost air, a feeling of being forgotten and unwanted, "My friends forsake me like a memory lost". Love is mentioned, but it is the throes of love, so John Clare does not still seem to be in love, but in the shadows of love. The use of the phrase 'self-consumer of my woes' is a very interesting one, as means that the pain that the writer is inflicted with is brought
Database Coursework on a Vehicle Rental System: Analysis
Introduction I am a student starting my second year of A levels at a College of Further and Higher Education and one of these A levels is ICT. The A2 part of the ICT A level consists of three modules, one of which is coursework and it is worth 40% of my overall A2 grade. The coursework requires me to identify and conduct research into an open-ended problem that exists for a real end-user. From results of this preliminary research, I must design an appropriate ICT-based solution for the problem using the skills and knowledge that I have acquired throughout the duration of my course. After designing such a solution, I will develop the actual software to be used to address the problem along with the technical documentation. This software will then undergo extensive testing so that I may identify and correct any bugs that may be present within the system. Plans on how the system will be implemented will then be made, including any training the staff will need and how existing data will be transferred into the new system. Finally, the User Documentation will be produced and I will evaluate the system on a number of various criteria to see if it meets the requirements outlined at the analysis stage. Throughout the whole process, I will be using the skills and experience that I've acquired in the first year of the course (and what I will be learning this year) to incorporate a wide
Analysis of Two Brands of Commercial Bleaches
PLK TANG YUK TIEN COLLEGE ADVANVED LEVEL CHEMISTRY (TAS) EXPERIMENT 3 Analysis of Two Brands of Commercial Bleaches Objective To determine the concentration of sodium chlorate(I) (NaClO) in two commercial bleaches and compare the two bleaches on both concentration and price. Procedures . 10.0 cm3 of the bleach "KAO" was pipetted into a clean 250 cm3 volumetric flask. It was made up to the mark using deionized water. 2. 25.0 cm3 of the diluted solution was pipetted into a conical flask. 3. 10 cm3 of 1 M potassium iodide solution and 10 cm3 of dilute sulphuric acid was added into the conical flask also. 4. The mixture in the conical flask was titrated against the 0.0992 M sodium thiosulphate solution. 5. Three drops of freshly prepared starch indicator are added into the conical flask when the reaction mixture turned pale yellow . 6. The mixture was titrated to the end-point. 7. At the end point, the solution turned from dark blue to colourless. 8. Steps (1) to (7) were repeated with another bleach "LION" Results Concentration of standard sodium thiosulphate solution : 0.0992M Brand 1 Trade Name : KAO Bleach Price : $7.33per dm3 ($11/1500mL) Trial 2 Final burette reading / cm3 1.90 23.40 35.00 Initial burette reading / cm3 0.20 1.90 23.40 Volume of Na2S2O3 / cm3 1.70 1.50 1.60 Brand 2 Trade Name : LION Price : $6.67per dm3
A Critical Analysis of Wind By Ted Hughes
A Critical Analysis of Wind By Ted Hughes Hughes's opening line is sculpted in such a way that it gives the reader an abundance of sensations. The poet achieves amazing efficiency in the line "far out at sea all night" in that the reader is exposed to distance, time and environment. The metaphor of the house being "out at sea" projects the image of a boat "far out" feeling totally isolated. The house faces wave upon wave of inexhaustible pounding from the wind as a boat would from an enraged sea. The time scale of "all night" could literally mean all night or it may refer to the perception that the wind is so acutely intense that it feels prolonged. The words "crashing", "booming" and "stampeding elevate the wind to one of biblical proportions which sounds like an orchestra thumping out a killer crescendo. The line "stampeding the fields" accentuate the brutality of the wind attacking the natural surroundings. In keeping with the oceanic metaphor the house "floundering" evokes a sense futility. The alliteration in "black" and "blinding" impose emphasis upon the words and a heightened sense of awareness in the reader. The second stanza is a witness to the winds legacy. The magnitude of the winds power is illustrated with "the hills had new places". The ultimate measure of the winds potency is that its changed the environment which we would normally imagine reassuringly
