Friday, August 28, 2020

The Paradox of Revenge in Edgar Allan Poes The Cask of Amontillado Ess

The Paradox of Revenge in Edgar Allan Poe's The Cask of Amontillado ?The Cask of Amontillado? brings up an issue relating to the numerous character of oneself (Davidson 202); Can concordance of one's self be reestablished once base driving forces have been followed up on? This inquiry proposes the dream of wrongdoing without result (Stepp 60). Edgar Allan Poe utilizes first individual perspective, distinctive imagery and situational incongruity to show that in view of man's internal identity, retribution is eventually unrealistic. Edward Davidson proposes that Montresor, the fundamental character of the story, has the intensity of moving descending from his psyche or scholarly being and into his beast or physical self and afterward return again to his scholarly being with his all out self being healthy (202). Be that as it may, Poe recounts to this story from Montresor?s perspective. The utilization of first individual portrayal furnishes the peruser with understanding into Montresor's inward battles. First individual portrayal is Poe's strategy for guaranteeing the peruser comprehends that Montresor isn't fruitful at this agreement. The contemplations and sentiments of Montresor lead the peruser to reason that he isn't fruitful at retribution. Montresor says in recounting to his story, You, who so surely understand the idea of my spirit, won't assume, anyway that I offered expression to a danger (153). By conveying along these lines, the inquiry emerges of who Montresor is really addressing, and why he is recounting to this story fifty years after the fact. One can just presume that it is for one of two reasons: he is either gloating or at long last giving admission. As he recounts to the story, it becomes evident that he has not yet filled his need to win, and now a portion of a century later, is as yet battling with his inner voice. As Gregory Jay s... ...onscious self is fixated on a wickedness, the cognizant must defeat it or a conundrum will bring about which both selves ward. Works Cited Barbour, Brian. Poe and Tradition. Bloom 63-81. Sprout, Harold. Understandings: The Tales of Poe. New York: Chelsea House, 1987. Davidson, Edward H. Poe: A Critical Study. Cambridge: Harvard UP, 1980. Frieden, Ken. Poe's Narrative Monologs. Bloom 135-48. Gargano, James. The Question of Poe's Narrators. Regan 164-71. Jay, Gregory. Poe: Writing and the Unconscious. Bloom 83-110. Poe, Edgar Allan. The Cask of Amontillado. Literature for Composition. Woody Barnet, et al, eds. fourth ed. New York: HarperCollins, 1996. 153-57. Regan, Robert. Poe: A Collection of Critical Essays. Englewood Cliffs: Prentice-Hall, 1967. Stepp, Walter. The Ironic Double in Poe's The Cask of Amontillado Bloom 55-62.

Saturday, August 22, 2020

Art and Fashion Essay Example | Topics and Well Written Essays - 1000 words

Craftsmanship and Fashion - Essay Example The article Craftsmanship and Fashion centers around the style structures and Elsa Schiaparelli. Schiaparelli’s notable plans concerning fixation, sex and sexuality, were female and practical and simultaneously kept up the subject of Surrealist of the lady body as interest. Schiaparelli is all around associated with cooperating with Salvador Dali and through their work, Surrealist work become energized and furthermore picked up life. Through cooperating with Dali, Schiaparelli removed style from the storeroom, transforming it into dressing with disposition. Dali had a lot of regard in transit Schiaparelli’s plans had the option to bring out physical disclosure to the dreams of the torpid psyche. What's more, Dali had regard on Schiaparelli’s capacity to concoct a type of ladylike excellence coordinating to male’s sensual creative mind. The materiality of dressing, when utilized as an embellishment of the body, transformed Surrealist work into visual style, and design gave route for the making of all around planned pieces out of unprecedented or usually less helpful articles. These realities structure a reason for the clarification of why Dali and individual Surrealists had a lot of appreciation for high fashion. One issue that merits considering is that a larger part of Schiaparelli’s work has become a key patron in attire plan, in any case, lamentably, her commitment goes unrecognized. In any case, Schiaparelli as a team with Dali figured out how to breath life into Surrealism, energizing works of art and changing craftsmanship into wearable and utilitarian component. Schiaparelli was very much aware that garments and frill had the capacity to work as an expansion of a lady, empowering ladies to change their character and settle on a decision of what they plan to turn into. Aside from teaming up with Dali, Schiaparelli additionally worked together with different Surrealists, for example, Oppenheim, Giacometti, Aragon, Fini, a nd Triolet in making adornments and aroma holders and attire. Likewise, Schiaparelli's own assortments were additionally specifically Surrealist (Baudot, 2006). Unique in relation to the drawn out Coco Channel whose bits of work keep on sprouting, the House of Schiaparelli has not figured out how to accomplish such stable ubiquity. At the same time, Schiaparelli’s bits of craftsmanship have not had the option to trigger an awesome arrangement of noteworthy examination contrasted with Coco channel (Peacock, 1993). Along these lines, Schiaparelli’s commitments in the design business are yet to be completely recognized. Many have excused Schiaparelli’s commitments on grounds that they are subordinate and others blaming her for taking different people’s thoughts. The 2007 V&A even organized designs by Schiaparelli, yet this was one of a couple of shows that arranged her work. In this manner, discovering displays with Schiaparelli’s work remains inc redibly uncommon and the last show that had a restrictive dedication to her work occurred in September 2002 and January 2003 at the exhibition hall of workmanship in Philadelphia (Wood, 2007). In opposition to what is referenced above, there were various distributions on

Friday, August 21, 2020

Custom service free essay sample

Content # 8470 ; 1 The importance secretaries grumbled about an inadequacy of hardware, including picture and photograph cameras and Dictaphones, which does non let their essentialness administrations to have data about the activity of the imposts segments in cut. On specific events, the essentialness administrations are non ready to do this data accessible to writers since it has been grouped by caputs of certain imposts terminuss. The abstract conclusion of imposts caputs on columnists strategic, piece great as their inability to comprehend the genuine endeavors standing up to the imposts administration in the nation of open dealingss are, blending to the meeting s members, a genuine start of employments cursing dealingss between the importance and the imposts administration. For case, Altai imposts terminal mediator Olesya Matyukhina recommended that an incredible exchange relies in some cases upon the individual heading an imposts terminal whether its caput is neighborly to columnists and publication workplaces or non. In the terminal, the members in the meeting went to a choice that dealingss between the criticalness and the imposts administration should be changed. Columnists must be progressively cautious while overseeing data from imposts segments, while noteworthiness administration functionaries need to change over their imposts segment s caput to swear the importance. Content # 8470 ; 2 MOSCOW New imposts obligations regarding the fare of oil and oil stocks went into outcome on Monday, with the higher money related worth echelons seeing an expansion in the obligation degree. These cost connected obligations were set a month ago by removal decree as an outcome of expanded money related qualities on the global market, said Alexei Savenko, translator with the State Customs Committee. In any case, the market money related estimation of oil is currently lower than when the decree was marked one month prior. For delineation, the benchmark oil Russia Urals by and by drifts at somewhat more than $ 24.50 a boycott el ; at the terminal of November, it exchanged at around $ 30 a barrel. This implies it descended an income upgrade section to the 20-euro obligation exacted when oil sells between $ 22.50 and $ 25.00 a barrel. The increments simply come into dramatization when oil sells for more than $ 25 a barrel. Beneath this money related worth, nil modifications. At the most noteworthy outrageous, when the money related estimation of oil is more than $ 32.50, a fare obligation of 48 euros ( $ 45.35 ) per ton, or 6.67 euros per barrel, will be collected. This is up from 34 euros for each ton. The obligation at any point relied upon the general fiscal qualities, said Dmitry Avdeev, an oil expert at United Financial Group, a protections firm. This clasp, however, there is a kind of log jam between the new oil financial worth and the obligation rate. Content # 8470 ; 3 MOSCOW, March 17 ( RIA Novosti ) The Russian Foreign Ministry said Friday it considered the new imposts mandates requiring that all products come ining Ukrayina from Transdnestr have an authority Moldovan stamp a political activity. Blending to the service, Chisinau s reasons for existing were to assume responsibility for all remote financial exercises of the splitting endlessly Moldovan part, harm the bases of the provincial spending development and do a cultural emergency. The service said the new statutes upset theodolite exchange and transport joins by means of Transdnestr. bring bringing down losingss on Ukraine, Moldova and southeast Europe. Russia s State Duma and the Foreign Ministry said before that the Ukrainian assurance, made at Chisinau s appeal, would genuinely harm the Transdnestr monetary framework. What Chisinau and Kiev are looking to appear as an endeavor to define the limit line all together methods nil not exactly the punishment of monetary faces on Transdnestr so as to constrain it to offer up to potential answers for the activity that truly penetrate the tepublic s right to specific situation as specified by universal understandings, the Duma proclamation said. Russian Parliamentarians said the assurance had harmed the Transdnestr battle settlement by energizing political tensenesss around the issue. They other than called for Ukraine and Moldova to raise the new confinements and dispatch dealings quickly, as specified in a 1997 memoranda. An announcement from the Moldovan parliament depicted the situation in the part as perilous and asserted that the splitting endlessly part is purposefully blockading any gainful stairss taken by Moldova and different members of the exchange methodology planned for happening a serene and finishing up revelation to the Transdnestr battle. The parliament other than communicated frustration that Russia, as an of import segment of the exchange system, had non reacted conventionally. Content # 8470 ; 4 The Federal Customs Service herewith exhorts regular people passing via air: I. When go forthing Russia and before uncluttering the imposts: 1. Make sure to make full out your ( mandatary ) imposts presentation and follow the rosy channel on the off chance that you are moving in your checkered or lightweight baggage any or the entirety of the undermentioned: Cash in excess of RUR 50,000.00 ( 500 lower limit prizes in similarity with the Federal Statute present as of October 22, 2003 ) . In this case the total rising above the ordered RUR 50,000.00 is to be set in a sedimentation history with the few Federal Customs Service division as that rising above as far as possible permitted aggregate of RUR 50,000.00 just to be removed from the Russian Federation as a ball sum ; Money ( remote cash and Russian Rubles ) rising above a likeness USD 3,000.00 only yet numbering close to USD 10,000.00. Fare of an entirety rising above what might be compared to USD 10,000.00 is permitted at the rate uncovered in the few imposts revelation, validating old bringing of the above whole into the Russian Federation ; Protections, installment paperss and instruments are considered exportation on status of handiness of a Form # 0406007 Certificate gave by an approved bank or on the balance of an imposts assertion as relevant proof of their old bringing into the Russian Federation ; Explorer s Checks if their whole entirety surpasses what might be compared to USD 10,000.00 ( less the total of different resources being sent out ) ; Loved metals and shakes in any signifier or area with the rejection of incidentally sent out adornments, other family focuses or loved piece ; Guns, ammunition and explosives ( pieces and ammunition for them are sent out fit to a permit gave by the few Interior Ministry divisions ) ; Opiate drugs, psychotropic substances or their counterparts ; Social resources ( instruments, pictures, figures, symbols, antiquated coins, improvements and requests, postage throws, and different focuses fabricated or gave 50 mature ages back or prior ) are took into consideration exportation theme to a permit gave by the RF Ministry of Culture or on the balance of an imposts statement proving a previous bringing of these focuses into the Russian Federation ; 2. On the off chance that you have nil to announce there will be no interest for you to make full out an imposts statement and you can proceed with the green channel. If it's not too much trouble keep up in head that an imposts revelation is non-inexhaustible one time lost and no transcripts of the equivalent will be given. Providing bogus data in your imposts statement each piece great as inability to proclaim imposts obligation subject merchandise outcomes in risk under the present RF Law. Content # 8470 ; 5 Madam , said U.S. Customs Inspector Harry Standish delicately to the blue rakish grown-up female whose few packs were scattered loosened on the Customs survey plain exhibit between them, are you very certain you do nt wish to adjust your account? She snapped back: I guess you re proposing I should lie when I ve as of now came clean with you . Harry Standish overlooked the second remark, as Customss officials were prepared to ignore numerous maltreatment they got and addressed politely, I m non proposing anything, lady. I basically inquired as to whether you wished to revise your announcement about these focuses # 8212 ; the gowns, the jumpers and the fur garment. The American identification demonstrated that she was Mrs. Harriet Du Barry Mossman. Harry Standish stated: I wonder in the event that you d mind buying in this signifier. On the off chance that you like, I ll explain it to you. For what reason would it be a good idea for me to buy in anything? Mrs. Harriet Du Barry Mossman requested. He addressed quietly, To do things simpler for yourself, madam. We re basically asking you to validate what you ve as of now let us know. Assume I will not buy in? At that point we will be obliged to keep you here while we proceed with the test. There was the concise instability, along these lines, Very great. You round out the signifier, I ll buy in. No, madam, you round it out. Presently here, if it's not too much trouble portray the focuses and close by where you state they were acquired, please, give the name of the shops ; other than from whom you got the fur garment as a blessing. Madam, Inspector Standish stated, is there something else you wish to proclaim? It was Customs Bureau strategy to give voyagers the extraordinary opportunity to do deliberate presentations. In that occasion, Madam, Inspector Standish stated, Will you generously open your wallet? For the main clasp the blue grown-up female sold out uncertainness. In any case, absolutely packs are neer examined. Regularly, they are non. Be that as it may, we do hold the right. Mrs. Mossman was detectably pale. The Inspector educated the youthful Customs official adjacent to him: Inspect everything actually cautiously. Check the things clinched and cases, the creases and sews of the considerable number of attire. Make a rundown. You comprehend what to make. He was go forthing when Mrs. Mossman shouted toward him: Military official! # 1058 ; # 1077 ; # 1082 ; # 1089 ; # 1090 ; # 8470 ; 1 # 1055 ; # 1088 ; # 1077 ; # 1089 ; # 1089 ; # 1089 ; # 1077 ; # 1082

Tuesday, May 26, 2020

The Unexplained Puzzle Into Enders Game Essay Topics

The Unexplained Puzzle Into Ender's Game Essay Topics So the entire war is because we can't speak to one another. Cost-free Enders Game essay samples can be found FreeEssayHelp with no payment or registration. From the very start of the novel, Ender's extraordinary empathic abilities are absolutely conspicuous. Speaking about something you understand well makes it a lot easier and enjoyable! The book proceeds to inspect the question of good and evil. Since you can see, several of the topics listed are new and deal with the present issues happening in the World today. Take notes concerning all prospective topics you're able to consider. Start researching, and get started writing! Only as long as you have a look at your life from a neutral perspective are you going to be in a position to tell what's really happening and what's a fragment of your imagination. There are a couple of easy guidelines to follow to be able to be in a position to compose a fantastic persuasive essay. To get started writing your assignment you would want to run into an interesting and promising topic. You ought to be proficient in the topic, have an overall idea about the chosen issue and can get the best arguments to demonstrate your thesis. Understanding Ender's Game Essay Topics If it's a college essay, it is critical to consider what aspects of it is going to be evaluated. Possessing no thought of the persuasive essay topics, you just do not understand what to write about. It will be simpler that you compose a superior persuasive essay if it's a subject in which you have knowledge. Well, it's not that easy to pick the finest persuasive essay topics from a pool of great sug gestions. All things considered, you can observe that writing a persuasive essay isn't a brain surgery. Always bear in mind an ideal persuasive essay ought to be persuasive. Good persuasive essay topics need to be persuasive. There are several good persuasive essay topics to pick from. Just comply with the guidelines stated above, and you will be well on your way to writing an excellent persuasive essay. The more information you are able to gather about the subject, the better prepared you'll be for writing your essay. You should utilize APA reference tools to aid in writing your essay the right way or seek the services of an expert essay writer that could write the essay employing the APA reference tools. Doing this, you'll certainly find your ideal essay title easily and faster. What Everybody Dislikes About Ender's Game Essay Topics and Why There are a lot of intriguing topics that could be become a persuasive essay if you take the opportunity to consider about doing it. There are just a few things that define whether an essay you're working on is going to be a good one. After you settle on the subject and pick the position on which you will base your essay, the remainder of the job can then begin. Still, figuring out the very best topic for your essay i sn't your only concern for a student. It's important to understand that essay topics are just basic ideas that leave you pondering a notion that might be a huge deal to another person. Argumentative essay topics are so important since they are debatableand it's critical to at all times be critically considering the world around us. Selecting a persuasive essay topic may take lots of time without ending up with the terrific solution. In an issue of speaking, picking out persuasive essay topics is similar to telling yourself what you wish to convey to the rest of earth. The simplest approach to pick out a persuasive essay topic is to go over a present issue. Persuasive essay topics don't always must be of a critical nature, you can write about things which are relevant in your life. Selecting an excellent topic for your essay is among the most essential and frequently tricky parts for many students. Deciding on the most suitable topic for a persuasive speech can be not such an easy issue to do as it might seem. Then comes the revelation he was not playing a game whatsoever, but instead commanding the faraway troops who were fighting the Formics in actual time. In light of the above it's significant that it might be worth mentioning that the present world is easily the most dangerous place because it is full of hatred, jealousy, slothful, vindictiveness and competition of ill money which never support the qualities of a healthful society. Discussing something which you are familiar isn't only more fun but also a good deal simpler. The day's ba ttle is remarkably big and complex.

Friday, May 15, 2020

Maya Angelous Influences Essay - 1236 Words

Maya Angelou’s Influence Maya Angelou is terrific performer, singer, filmmaker, and civil-rights activist. She is a phenomenal woman, one thing that she does best is writing. She is still living today, I believe her legend will never die. If one would talk to her, he or she would think she has lead a normal, happy life. Her life is blissful now, it was not always perfect. Maya beard enough emotional stress in a time frame that most people do not experience in a lifetime. Her experiences and the lessons learned encouraged her to help others become strong. Maya Angelou is one of the best examples of someone overcoming rape, being mute for several years, and having a child at a young age to achieve success of becoming an accomplished†¦show more content†¦Maya Angelou was inspired to read by several amazing authors and an educated Black woman. â€Å"She read books by Langston Hughes, W. E. B. Du Bois, and Paul Lawrence Dunbar†. .†(Poetry Foundation, 2008). Maya said, â€Å"Even though she and Bailey were discouraged from reading the works of white writers at home, Angelou read and fell in love with the works of William Shakespeare, Charles Dickens, and Edgar Allan Poe.†(Poetry Foundation, 2008). Mrs. Flower’s was someone who also once played a wonderful role in her life. She was the person whom was able to get Maya to speak again when she was young. Mrs. Flowers was a charming gentlewoman who was an aristocrat in the small town of Black Stamps. She would give Maya books to take home, and she would tell her to read the books aloud. â€Å"She explained the importance of education, importance of the spoken word, and instilled in her a love of poetry. †(Poetry Foundation, 2008). Maya became so interested in writing that she moved to New York and joined the Harlem Writers Guide in the late 50’s and began her writing career. Maya Angelou is a leading literary voice of the African-American community. She writes of the triumph of the human spiri t over hardship and adversity. â€Å"Her style captures the ca-dences and aspirations of African American women whose strength she celebrates.† (Library of Chattanooga State, n. d.) Maya has paved the way for children who has had a damagedShow MoreRelatedMaya Angelous Great Influence and Success Essay679 Words   |  3 PagesAngelou read her poem of on the pulse of the morning which was broadcasted around the world. Dr. Angelou’s honorary skills have leaded her to earn more than 50 honorary degrees. After the devastating occurrence of Martin Luther King Jr’s death Dr. Angelou did not celebrate her birthday afterwards but sent flowers to King’s widow named Coretta Scott King for more than 30 years until Coretta died in 2006. Maya Angelou is the first black woman to write and produce several prize-winning documentaries suchRead MoreEssay on The Interpretation of None the Other, Maya Angelou1508 Words   |  7 Pagesworld holds. Dr. Maya Angelou is one of the most renowned and influential voices of our time. Hailed as a global renaissance woman, Dr. Angelou is a celebrated poet, memoirist, novelist, educator, producer, actress, historian, filmmaker, and civil rights activist. As a strong African-American woman, she has experienced the brutality of racial discrimination, yet also absorbed the unshakable faith and values of traditional African-American family, community, and culture. Dr. Maya Angelou’s notorious aspectsRead MoreI Know Why The Caged Bird Sings1482 Words   |  6 Pages Maya Angelou tells of her life experiences and struggles in her book â€Å"I Know Why the Caged Bird Sings† that gives us insight about Maya’s life as a young black girl growing up in a time of racism. The novel discusses various forms of oppression that she had to face as well cope with them. Robert A. Gross wrote an analysis for Newsweek about the book and claimed that Angelou’s book is not only an interesting stor y of her own experience, but also a portrayal of a Southern black communityRead MoreDisplacement, a Theme in Maya Angelou ´s I Know Why the Caged Bird Sings1603 Words   |  6 Pagespersonality. Maya Angelou creates a theme of displacement in her novel I Know Why the Caged Bird Sings. Angelous novel has been critiqued by many notable scholars for being a classic autobiography. The critics note the importance of the setting to show universal displacement and the use of characterization to display the influences in Angelous life. The critics also note that Angelous diction and tone allow her pain and suffering to be evident throughout her novel and into her life. Angelous use ofRead MoreMaya Angelou1001 Words   |  5 PagesMaya Angelou You may shoot me with your words, you may cut me with your eyes, you may kill me with your hatefulness. But still, like air, Ill rise. Have you ever been so influenced by such a small amount of powerful words? This brilliant quote extracted from Maya Angelous own poem, Still I Rise, basically brings out the spirit and nature of each of her publications. Maya Angelous works of poetry are seen as inspiration for those who have been discriminated for their public appearances. AsRead MoreEssay on Maya Angelou1185 Words   |  5 PagesDistress in Maya Angelous Life Marguerite Ann Johnson, commonly known as Maya Angelou, was born on April 4, 1928 in St. Louis, Missouri. She is a famous African-American poet, novelist, and playwright and also worked during the civil rights: Angelou is a very remarkable Renaissance woman who hailed as one of the great voices of contemporary literature (www.mayaangelou.com). She is also an activist in civil-rights. Angelou went through many controversies during her childhood and adulthood; herRead MoreMaya Angelou: A Model Woman Through Influential Literature Essay1708 Words   |  7 Pagespositive influence on society itself. Maya Angelou is a great example of the model woman. She has beaten the odds and has become one of the most well known African American women of today. She is an author, poet, historian, songwriter, playwright, dancer, stage and screen producer, director, performer, singer, and civil rights activist. Her most influential work comes from her extraordinary books and poems. Her literature has i nfluenced the young and old with their contents. Maya Angelous literaryRead MoreBlack Empowerment By Maya Angelou And Claude Mckay921 Words   |  4 Pagessuch as influences from musical artists as well as popular actors and actresses. They become major influences based on their celebrity status. Numerous people in our society disregard the influence that literature impacts our culture, especially in earlier time periods. A reason for this is possibly because of the emphasis on education during that time because African Americans wanted to overcome the stereotypes of not being as educated as whites. Another reason literature was an influence on theRead MoreEssay about Girl/Woman Work Socio-Historical Critique1439 Words   |  6 PagesClaudette Woodhouse Professor Lea Ann Douglas English 112 29 October 2011 Any and everything can influence a work of literature. Life experiences, life choices, political events, time periods, or even time eras. In lieu of this concept it can be assumed that an interesting life may produce interesting poetry or stories. Two phenomenal women, Maya Angelou and Jamaica Kincaid portray two different points of view in their works of literature. A lot of things can contribute to their differencesRead MoreI Know Why The Caged Bird Sings1159 Words   |  5 PagesI Know Why The Caged Bird Sings, by Maya Angelou is an autobiographical coming of age story set in the midst of the racially charged era of the Jim Crow Laws. Angelou’s novel explores the enormously influential first seventeen years of her life, as she struggles to overcome the seemingly insurmountable personal and societal adversities such as rape, race, instability, and insecurity. Angelou’s powerful depictions of the events of her early life immediately immerses her readers in the fact t hat life

Wednesday, May 6, 2020

Classification Construct The Second Lineage Of...

The Synapsid clade (classification construct), are known as the second lineage of terrestrial vertebrates (amniote tetrapods), that originated at the end of the Paleozoic era (Pough, Janis, and Heiser 448). According to Pough, Janis, and Heiser, â€Å"Synapsids include mammals and their extinct pre-decessors, commonly called â€Å"mammal-like reptiles†, (can also be referred to as â€Å"non-mammalian†)†. The key distinction in distinguishing synapsids from other amniotes is their synapsid skull; the synapsid skull is a skull with the presence of a lower temporal (synapsid) fenestra, plus a few other skull features (Fig. 1) (Pough, Janis, and Heiser 448). Fig. 1- Diagram of the Synapsid Skull. The diagram depicts a generalized image of the Synapsid skull. The key in differentiating the Synapsid skull from other skulls is that temporal fenestra, which is located behind the orbit. Dilkes DW RR Reisz (1996), First record of a basal syanapsid (mammal-like reptile) in Gondwana. Proc. Royal. Soc. Lond. B 263: 1165-1170. Aerosaurus, Elliotsmithia, SYNAPSIDA, Varanops, Varanopseidae. http://palaeos.com/vertebrates/synapsida/synapsida.html When defining Synapsid, this term is often misused to only refer to the only extinct non-mammalian forms, when in actuality this group includes all the amniotes that descended from a common ancestor who had a synapsid type of temporal fenestration (Pough, Janis and Heiser, 448). A term when defining the Synapsid lineage is â€Å"mammal-like reptile† this term

Tuesday, May 5, 2020

General Chemistry Imu Exp 1 Essay Example For Students

General Chemistry Imu Exp 1 Essay Introduction Background Indicators are used in acid-base titrations to determine end points as both acid and base are colourless in nature. However, indicators chosen must be suitable according to the type of reactions such as: Strong acid-weak base titration Weak acid-strong base titration Strong acid-strong base titration Weak acid-weak base titration Only the first two mentioned above will be investigated in this experiment. Aims/Objectives 1. To understand to importance of selecting suitable indicators for detecting the end-points of acid-base titrations. . To obtain titration curves for: a. Strong acid-weak base titration b. Weak acid-strong base titration Learning Outcome 1. Able to choose a suitable indicator for detecting the end points of different types of acid-base titrations. 2. Able to draw and hence determine the end-point on the titration curves. Materials and Methods The experiment is carried out according to the procedures described in Experiment (1): Investigati on of the suitability of indicators and instrumental detection of equivalence points in acid-base titration under the General Chemistry module Results Part 1: Suitability of Indicators A. Strong acid-weak base titration Acid: HCl (aq) Base: NH4OH (aq) Reaction: HC1(aq) + NH4OH(aq) > NH4Cl(aq) + H2O(l) Indicator: Phenolphthalein | |1 |2 | |Final burette reading/ |29. 90 |29. 70 | |Initial burette reading/ |0. 00 |0. 0 | |Titre value/ |29. 90 |29. 70 | Mean titre value = = 29. 80 1 Indicator: Methyl orange | |1 |2 | |Final burette reading/ |27. 00 |27. 00 | |Initial burette reading/ |0. 00 |0. 0 | |Titre value/ |27. 00 |26. 80 | Mean titre value = = 26. 90 B. Weak acid-strong base titration Acid: CH3COOH(aq) Base: NaOH(aq) Reaction: CH3COOH(aq) + NaOH(aq) CH3COONa(aq) + H2O(l) Indicator: Phenolphthalein | |1 |2 | |Final burette reading/ |25. 50 |25. 0 | |Initial burette reading/ |0. 00 |0. 20 | |Titre value/ |25. 50 |25. 60 | Mean titre value = = 25. 55 Indicator: Methyl orange | |1 |2 | |Final burette reading/ |4. 60 |4. 0 | |Initial burette reading/ |4. 20 |4. 60 | |Titre value/ |0. 40 |0. 30 | Mean titre value = = 0. 35 2 Discussion 1. The colour change for both phenolphthalein and methyl orange in all titrations done in this experiments are from colourless to pale pink and from red to orange respectively since the base is added from the burette to the acid in the conical flask. 2. Indicator |Colour in acid |Colour in alkaline | |Phenolphthalein |Colourless |Red | |Methyl orange |Red |Yellow | 2. Titration curve of strong acid-weak base There is a steady increase in pH when 0 – 20. 00 of NH4OH (aq) is added. There is a sharp increase in pH when 27. 60of NH4OH (aq) is added. The end-point for this titration is at pH 5. where the graph is the steepest. Titration curve of weak acid-strong base There is a steady increase in pH when 0 – 20. 00 of NaOH (aq) is added. There is a sharp increase in pH when 25. 30of NaOH (aq) is added. The end-point for this titration is at pH 9. 5 where the graph is the steepest. Differences between the two curves Curve of strong acid -weak base starts at pH 1. 11 whereas curve of weak acid-strong base starts at pH 1. 21 Curve of strong acid-weak base levels off at pH 8. 34 whereas curve of weak acid-strong base levels off at pH 11. 80 Curve of strong acid-weak base has an end point at pH 5. whereas curve of weak acid-strong base levels off at pH 9. 5 Curve of strong acid-weak base has a sharp increase when 27. 60of NH4OH (aq) is added whereas the curve of weak acid-strong base has a sharp increase when 25. 30of NaOH (aq) is added. 3. Titration of strong acid-weak base The end-point is at 27. 75 of NH4OH (aq) added (obtained from graph). Phenolphthalein only shows colour change when 29. 80 of NH4OH (aq) is added, hence it changes colour at the wrong volume (too late, after end-point volume), thus it would be impossible to find to end-point accurately. .ub4ad1120601855a0c4b30d7213b06964 , .ub4ad1120601855a0c4b30d7213b06964 .postImageUrl , .ub4ad1120601855a0c4b30d7213b06964 .centered-text-area { min-height: 80px; position: relative; } .ub4ad1120601855a0c4b30d7213b06964 , .ub4ad1120601855a0c4b30d7213b06964:hover , .ub4ad1120601855a0c4b30d7213b06964:visited , .ub4ad1120601855a0c4b30d7213b06964:active { border:0!important; } .ub4ad1120601855a0c4b30d7213b06964 .clearfix:after { content: ""; display: table; clear: both; } .ub4ad1120601855a0c4b30d7213b06964 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ub4ad1120601855a0c4b30d7213b06964:active , .ub4ad1120601855a0c4b30d7213b06964:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ub4ad1120601855a0c4b30d7213b06964 .centered-text-area { width: 100%; position: relative ; } .ub4ad1120601855a0c4b30d7213b06964 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ub4ad1120601855a0c4b30d7213b06964 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ub4ad1120601855a0c4b30d7213b06964 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ub4ad1120601855a0c4b30d7213b06964:hover .ctaButton { background-color: #34495E!important; } .ub4ad1120601855a0c4b30d7213b06964 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ub4ad1120601855a0c4b30d7213b06964 .ub4ad1120601855a0c4b30d7213b06964-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ub4ad1120601855a0c4b30d7213b06964:after { content: ""; display: block; clear: both; } READ: Homosexuals In Military EssayOn the other hand, methyl orange changes colour when 26. 90 of NH4OH (aq) is added, hence the colour change coincides more closely with 27. 75. Titration of weak acid-strong base The end-point is at 25. 75 of NaOH (aq) added (obtained from graph). Methyl orange shows colour change when 0. 35 of NaOH (aq) is added, hence it changes colour at the wrong volume (too early, before end-point volume), thus it would be impossible to find to end-point accurately. On the other hand, phenolphthalein changes colour when 25. 5 of NaOH (aq) is added, hence the colour change coincides much more closely with 25. 75. 7 4. Titration of strong acid-weak base A su itable indicator for this titration is therefore methyl orange, for the reasons stated in statement (3) above. Titration of weak acid-strong base A suitable indicator for this titration is therefore phenolphthalein, for the reasons stated in statement (3) above. 5. All mean titre values were calculated from titre values that were  ±0. 20 of each other. This is known as concordant results. 6. Precautions: Both Part 1: Suitability of Indicators and Part 2: pH titration curves a. The line of sight is perpendicular to the scale reading on the burette when taking both initial and final reading to avoid parallax error. b. A piece of plain white paper was place behind the burette when taking the readings to avoid error caused by refraction of light when it passes through the curved surface of the burette. c. The reading was taken from the bottom of the meniscus. d. All apparatus were rinsed with distilled water followed by the chemical intended to fill them in with respectively. Part 1: Suitability of Indicators a. A piece of white tile was placed below the conical flask during the titration to allow for better determination of any colour changes. b. The conical flask was swirled gently so the mixture would be uniform/homogenous of the acid and base added Part 2: pH titration curves a. The magnetic stirrer was turned off and a glass rod was used to stir the other side of the mixture (the side further away from the magnet) and then removed before the reading of the pH was recorded so the mixture would be uniform/homogenous of the acid and base added. . Proper disposal of waste was done to ensure the safety of the environment and as a good hygiene practice. a. Worn latex gloves were thrown into the paddle bin. b. Liquid wastes were drained directed into the sink. c. There were no solid wastes in this experiment. Conclusion Only indicators that changes colour completely over one of two drops at the end-point (determined from pH titration curve) is suitable to b e used to determine end-points of titrations Reference No references were used in this report END OF REPORT 8 Contents Introduction ? Background 1 ? Aim1 ? Learning outcome1 Materials and Methods1 Results ? Part 1: Suitability of Indicators ? A. Strong acid-weak base titration1 ? B. Weak acid-strong base titration2 ? Part 2: pH titration Curves ? A. Strong acid-weak base titration ? Table of pH and volume of NH4OH(aq) added3 ? Graph of pH against volume of NH4OH(aq) added4 ? B. Weak acid-strong base titration ? Table of pH and volume of NaOH(aq) added5 ? Graph of pH against volume of NaOH(aq) added6 Discussion7 Conclusion8 Reference8