Chemistry lab on saturated and unsaturated fats Essay

This experiment has also been trialled using KMnO4(aq) (0.0005 mol dm ) as the indicator. This turns from purple to colourless while unsaturation is still present. The procedure is the same as for bromine water, but portions of the potassium permanganate are added with swirling until the mixture fails to produce a colourless solution. The mixture requires more and more swirling as the amount of potassium permanganate increases. Warming fats in the Volasil using a beaker of hot water helps the fat dissolve and also speeds up the reaction. see more:chemistry matriculation This experiment should be done in a fume-cupboard with ready filled burettes. Background theory Saturation and unsaturation. Classic chemistry experiments 21 Safety Wear eye protection. Answers 1. Depends on what is supplied. 2. Weighing the fats and oils and calculating the exact amount of bromine water used per mole. 3. Unsaturated compounds contain double covalent bonds. Classic chemistry experiments Unsaturation in fats and oils Introduction Advertisements often refer to unsaturated fats and oils. This experiment gives a comparison of unsaturation in various oils. Burette  containing  bromine water Conical flask Oil and Volasil White tile What to record Volume of bromine water required for each oil. What to do 1. Using a teat pipette, add five drops of olive oil to 5 cm of Volasil in a conical flask. –3 2. Use a burette filled with a dilute solution of bromine water (0.02 mol dm ) (Harmful and irritant). Read the burette. 3. Run the bromine water slowly into the oil solution. Shake vigorously after each addition. The yellow colour of bromine disappears as bromine reacts with the oil. Continue adding bromine water to produce a permanent yellow colour. 4. Read the burette. Subtract to find the volume of bromine water needed in the titration. 5. Repeat the experiment with: five drops of cooking oil (vegetable) and five drops of cooking oil (animal). Safety Wear eye protection. Questions 1. Which sample is the most saturated and which is the most unsaturated? 2. This comparison is only approximate. How could the method be improved? 3. What does unsaturated mean?

Jose Enrique Rodo's Ariel Essay Example | Topics and Well Written Essays - 500 words

Jose Enrique Rodo's Ariel - Essay Example As Carlos Fuentes explains in the prologue, "Ariel appears as the emotional and intellectual response of Latin American thought and Latin American spirituality to growing North American imperial arrogance, gunboat diplomacy, and big stick policies."1 United States utilitarianism is seen negatively by Rodo, since it represents a cultural conquest that could easily take over the Spanish American way of life. Rodo criticizes the United States drive to dominate the world and force his ideals onto the world, causing "the axis of the world to shift in the direction of a new Capitol". Jos Enrique Rodo published Ariel in 1900, at the turn of a new century and at times where modernists were discussing and questioning the role of society, as well as the idea of powerful masses versus the individual self. This text basically deals with the question of how Latin American culture is to survive in a modern mass society that often admires the United States democratic and utilitarian way of life. The essay, one of Rodo's most influential works, uses Shakespeare's characters from ''Tempest,'' Ariel who represents the spiritual values, and Prospero, a teacher who represents the intellectual, and is faced with a choice between losing power or allying himself with the masses. In Prospero's character, the author incarnates the Latin American concern of whether succumbing to the ut

Hallidayan Approach and Categorisation Essay Example | Topics and Well Written Essays - 1500 words

Hallidayan Approach and Categorisation - Essay Example Halliday has tended to describe grammar from the perspective of a combination of systems and not rules. The basic contention is that any grammatical structure being studied will reveal the use of different choices from a discernible set of choices. If this approach is taken further, language can be seen as relying on meaning potential. Halliday argues that a grammatical system is closed since it is composed of a finite set of choices. However, a lexical system is open because various new additions are constantly taking place in language. Halliday also claims that language is organised in a meta-functional manner indicating that it is composed of different grammatical systems that aid to provide different kinds of meaning. He attaches the real reason behind language to providing meaning in social life and thus argues that all forms of languages are based on three semantic components. The first semantic component is ideational and works as a resource for interpreting human experience. This component tends to reveal the contextual value of a field in grammar. This indicates that it allows the exploration of the social processes through which the particular use of language in some fashion is being implicated. The second semantic component is interpersonal and serves to perform various functions (which may be simple or complex) that define social relationships. This component is in itself composed of the personas of the writer or the speaker, the social distance between interacting parties and the relative social status difference between the interacting parties. The last semantic component is textual and it aids in combining the two semantic components presented above. This combination allows both forms of meanings to come together in a coherent fashion through textual means. Using the textual meta-function allows an exploration of how coherent a piece of text is which in turn allows discerning the credibility of the subject text. The various forms of grammatical s ystems that are proposed by Halliday are in turn related to these meta-functions that serve to compose them. Comparison of Selected Texts At first glance, it seems obvious that the selected texts are geared to serve different purposes. The first text (extracted from a seller’s website) is designed to sell a product related to the medical condition being discussed. In stark contrast, the second text (extracted from a medical help website) is designed to help understand the medical condition and its progression and growth. This significant difference helps to explain the fact that the first text is more suggestive in nature while the second text is more declarative in nature. In addition, the first text contains little medical terminology because it is designed to appeal to the mass audience that will consume the text. This indicates that the first text is directed towards the layman who is suffering from this condition and is looking online for quick fixes to the problem.

A multi-Sensory Experience as a food critique Essay

A multi-Sensory Experience as a food critique - Essay Example They believe in the dress where one is well covered and they give utmost respect to the ladies and feel that she is the biggest responsibility of a man. They are more family oriented and they have a very close knit family. This is different from American culture. The dress sense of the host and waiters were also very ethnic and â€Å"Pathan† suits. The food served contains lot of spices and different herbs that are being added to get the flavour. Only some of the ingredients were described in their menu but not to a greater length. Their appetizers contains Hummus and meat, fried kibbi, sambusak, grilled cheese, Falafel, labneh, Makanek, Sojak, chicken tender etc. Salads contain Tabouli, House salad (Diced), Tahini house salad, Fatoush, Greek, Ceasar, Garden, Some special salad containing a mix of romain lettuce, cucumber, tomato, bell pepper, onion, mint and parsely with olive oil and lemon served with roasted pita bread. The sald had an option to add Chicken or Gyro. The salads were dressed with creamy garlic (as Arabic food contains lot of garlic paste), house dressing, ceasar and Ranch. Then the Menu also displayed â€Å"Entrees† encompassing beef kabob, Chicken kabob, Kafta kabob, Mixed Grill, Salmon kabob or blackened, Shrimp scampi, Fried Tilapia, Fried shrimp (as Arabic food contains lot of fried preprations), f ried seafood platter, chicken breast, Beef shawarma plate. The ingredients were not mentioned but the prepration showed that they will provide a meal as is is served with pita bread and House salad. Along with all these preparations the sides including spicy potato, yogurt cucumber, pickles, olives and tomato, fried cauliflower, basmati rice were also there. Major Arabic preparations go with rice and hence we also opted for the same. The â€Å"Manakeech† contains Halloum cheese, Ackawi cheese, Zaatar, Makanek, Soujouk and Labneh. These were served with the toppings of olives,

FINANCIAL STATEMENT ANALYSIS Assignment Example | Topics and Well Written Essays - 1250 words

FINANCIAL STATEMENT ANALYSIS - Assignment Example Another part of the paper presents the qualitative interpretation of the quantitative results. That is, the interpretation of the company’s ratio results and their significance. Lastly, a summary of the company’s financial position as reflected by the analysis has been produced together with a suitable plan of action. The overview of Procter and Gamble The company, based in the United States, is focused in manufacturing branded consumer products. The company’s main objective is the provision of products and services that are of high quality and value to help improve the well-being of both current and future generations. The company’s mission is formulated based on two objectives. That is, the profit maximization and shareholder wealth creation. The company has a widespread market covering more than 180 countries across the world. The company reaches the customer through the establishment of various outlets such as grocery stores, Merchandisers, drug stores , membership club stores and the neighborhood stores. Currently, the company’s financial performance is still below the investor’s expectations. ... analysis, the following tools have been selected: profitability measures, asset turnover, the inventory turnover, debtor’s collection period, creditor’s collection period, liquidity measures, the analysis of ROE drivers, Common size analysis, the growth analysis, and industrial analysis. The profitability ratio shows the performance of a firm regarding its ability to generate income from the investments. The efficiency ratio indicates the ease with which a firm utilizes its resources in order to generate revenue. The liquidity ratio would indicate the ability of a firm to meet its short-term needs. The common size present the expression of financial statement items as a percentage of another key item. In other words, the expression of all the balance sheet items as a percentage of the total assets. DuPont analysis presents the relationship between ROE drivers. The analysis is used to identify the level of performance of particular processes in a company. A companyâ€⠄¢s growth analysis is the percentage change of financial items based on a base period. Finally, the peer analysis is the comparison between the industrial average performance and the performance of a company [All the mathematical proofs are in the excel file] (Beyer 88-156). Summary of the quantitative analysis The balance sheet analysis – the total current assets decreased in the year 2009 as compared to the figure in the year 2008. The figure decreased by $ 2,610,000. The decrease can be attributed to the decrease in the value of account receivables in that year. Secondly, the decrease could be because of the reduced amount of work in progress. Thirdly, the decreased amount of finished goods also led to the decrease in the level of current assets. The shareholder’s equity decrease in the year by $

Developing an Integrated SLA Theory Research Paper

Developing an Integrated SLA Theory - Research Paper Example on this theory, Second language acquisition is mainly concerned the process of acquiring a new language other than the inborn language and how the process is affected by other disciplines such as the social-cultural theories. The theory offers a clear reflection from a new perception, on some of the challenges that people face during new language acquisition. It offers some pedagogical suggestions for foreign linguistic teaching. However according to Moore and Kearsly (1996), foreign language educators ought to maintain three types of interactions: learner- content, learner-tutor and learner-learner. According to Krashen’s theory on second language acquisition, comprehensible input and interactions are crucial. Interactions facilitate practice that has the advantage of enhancing the acquisition and fluency of the foreign language. This paper makes attempts to expound Social-Cultural Theory’s paradigms, its influence on second language acquisition and the tutorial sugges tions for foreign language coaching (Vygotsky, 1978). An overview of main second language acquisition theories that reveal that advance of the concepts of comprehensible input, understandable output, and interactions are significant in the second language acquisition. Many theories contain diverse views on the ways of ensuring interactions and the role it plays in the second language acquisition. Krashen’s theory (1985, 1994) has since becoming the most predominant theory in the acquisition of a second language and teaching exercise. According to the theory, SLA is determined by the extent of the compressible input during teaching. It asserts that the one-way contribution in the second language that is not only understandable but also at the level is just beyond the existing language proficiency of learners. The theory asserts that the prediction upon which learners acquire the notions of the second language relays of the method they get and understand the messages. Krashen’s (1994) offers

Business Law Coursework Essay Example | Topics and Well Written Essays - 1500 words

Business Law Coursework - Essay Example (or "Divies") under the principle of vicarious liability. Crates may likewise have a claim for consequential economic loss. For Abraham and Crates to successfully claim under the law of tort, it must be shown that the elements making up a successful claim of negligence exist: duty, breach, causation, and damage. In the case of Lochgelly Iron and Coal Co. v M'Mullan (1934), it was stated that the tort of negligence 'properly connotes the complex of duty, breach and damage thereby suffered by the person to whom the duty was owing'. It was likewise stated in Burton v Islington (1992) that 'it is now elementary that the tort of negligence involves three factors: a duty of care, a breach of that duty and consequent damage.' Based on the foregoing decisions, the tort of negligence to be actionable must have the following elements: (1) there is a legal duty of care owed by defendant to the plaintiff; (2) a breach of that legal duty of care consisting of an act or omission by the defendant; and (3) consequent damage on the part of the plaintiff as a result such act or omission by the defendant. [see also Markesi nis, p. 69 (1999)] In the recent case of Jones v BBC, 2007 WL 2187023 (QBD), Jones, a freelance sound recordist for defendant BBC, claimed that he suffered personal injury caused by the negligence of the defendants. During a recording of the lowering of a windmill mast, and while Jones was walking under the inclined mast, the windmill rotor fell onto his back causing severe spinal injury rendering him paraplegic. In ruling for the claimant, the court stated that the BBC, as employer, had assumed responsibility for the health and safety of freelancers when they work on BBC productions. Since the safety crew had identified a risk of the falling mast, a discussion before filming should have been made to warn the crew not to go beneath it. But the safety crew did not give the warning. Such failure of BBC, through the safety crew, is considered negligent which caused Jones' accident. It had been held that it was incumbent upon BBC, its safety crew and the owners of the farm as occupiers of the site to take steps further to those they had taken to ensure that the BBC crew did not pass under the mast during its lowering. In the instant case, the shop manager breached the legal duty of care required of him under the circumstances when he failed to give a safety warning or danger warning after opening the windows onto the pavement because it is reasonably foreseeable that such window obstructs the path of the pedestrian and is most likely to cause an accident. Thus, in the case of Crowther v Kirklees Metropolitan Council (2006), the claimant ambulance driver claimed damages for personal injuries she sustained when she went to the house of a patient where the street was a narrow cul-de-sac with no footpaths. When plaintiff got out of the ambulance and placed her right foot on the step, as it was a high drop to the road, and her left foot on the ground, it entered a large defect centred around a circular utility cover measuring 5cm in depth, 40cm in width and 46 cm in length. When her foot entered the defect, she went over on her left ankle, which she strained. In ruling for the plaintiff, the court stated that it was reasonably foreseeable that the defect could result in injury to pedestrians. The