Sunday, October 6, 2019
Introduction to managerial accounting slp Assignment
Introduction to managerial accounting slp - Assignment Example With its many stores around the world, considering its chain, 16,120 stores in over 49 countries, over 10,000 stores in the United States, and many other outlets in the rest of the globe makes the company an international coffee powerhouse. The main products are the drip brewed coffee and expresso-based hot coffee drinks. As a good customer of Starbucks coffee products, I took a keen interest to study the companyââ¬â¢s managerial accounting analysis in planning and controlling processes. This paper thus looks into how the managerial accounting works for planning and controlling processes in Starbucks. The financial records are the financial agents of any firm in matters concerning accounting management. Using the internal control process, it is true that the internal control of Starbucks over financial reporting includes maintaining records that in reasonable detail accurately and fairly reflect Starbucksââ¬â¢ transactions and give logical assurance that the transactions are recorded as necessary for preparation of our financial statements. Secondly, these managerial accounting principles give some logical facts and assurances that receipts and expenditures are made in accordance with management authorization (Gilligan & Wilson, 2009). Finally, the managerial accounting facts provide reasonable assurance that unauthorized acquisition, use or disposition of company assets that could have a material effect on the Starbucksââ¬â¢ financial statements would be prevented or detected on a timely basis. In analyzing the roles of the managerial accounting in Starbucks, it is important to determine the facts about managerial accounting. According to Maital & Seshadri, (2007), managerial accounting is basically concerned with providing information to personnel within Starbucksââ¬â¢ organization so that they can plan, make decisions, evaluate performance, and control operations. There are no rules and regulations associated with this field since the information is intended solely
Saturday, October 5, 2019
Case study Essay Example | Topics and Well Written Essays - 250 words - 20
Case study - Essay Example This is because there was a lack of team approach and communication deficits among the doctors and most healthcare workers. The different specialists who treated his various ailments lacked concern about what their counterparts did and this only compounded Mr. Robertsââ¬â¢s problems. He also notes that although there were ample medical records, consultants hardly reviewed the information within meaning that prescriptions they made and treatment they offered was questionable and not comprehensive enough. This resulted in wastage on valuable resources due to replication of prescriptions and reproduction of ineffective therapeutic plans. Physicians and patients hardly communicate well and this only exacerbates a medical situation. Treating all patients equally is said to have cost Mr. Robertsââ¬â¢s brothers life. Moreover, lack of assertiveness and ignorance among patients is a factor that contributes to untimely death and worsening of medical conditions. Ability for patients to ascertain true qualifications of physicians is very important (Gillies, 2003). Mr. Roberts we are told had to travel for more than 100 miles to get treated by the right physician. Hence, patientââ¬â¢s knowledge play a very important role in enhancing their
Friday, October 4, 2019
Irony In Nathan The Wise Essay Example for Free
Irony In Nathan The Wise Essay Nathan the Wise is a call for reexamination among those who consider themselves as having the monopoly on truth while the rest of the world are supposedly living their lives based on false creeds. The misunderstanding among peoples or nations is rooted in this perception. Gotthold Lessingââ¬â¢s play sought to highlight the innate prejudices of his charactersââ¬â¢ religious affiliations and subsequently provided a pithy reminder in the form of an irony. ââ¬Å"Ah! Indeed you do not know how closer I shall cling to you henceforth. We must, we will be friends. Despise my nation. We did not choose a nation for ourselves. Are we our nations? Whatââ¬â¢s a nation then? Were Jews and Christians such, eââ¬â¢er they were men? And have I found in thee one more, to whom It is enough to be a man? (Lessing)â⬠This was Nathanââ¬â¢s response to The Templar on the latterââ¬â¢s perception of Jews. The irony is on the second to the last sentence which implores humanity to be humane or kind to others regardless of what one believed in. Lessing is contrasting people living their lives based on religions and men who are humane kind to their fellowmen. The irony is in our supposition that our beliefs save us, guide our conduct, and teach us to be human. Yet the same precepts tend to make us biased and often cruel to those outside our fold. Indeed everyone is certain that his belief is the truth among many ââ¬Å"liesâ⬠. Sometimes itââ¬â¢s this self-righteousness that makes us unjust. A paradox as pointed out by Lessing. It is ironic that a play written more than two centuries still holds true today. IRONY IN TARTUFFE Moliere parodied religiosity through his play, Tartuffe. Moliere created a very witty play of witless characters-with the exception of the servant girl, Dorine and Cleante. The irreverence of the play could explain away its banning during its time. Hypocrisy is personified by Tartuffe as credulity is personified by Orgon. There are gems of literary passages in the play that demonstrate irony. One particular instance was the interjection of Dorine to Orgon who was convincing his surprised mother about Tartuffeââ¬â¢s masquerade. This passage in Act V, Scene V is worth considering: ââ¬Å"You are quite wrong, you have no right to blame him; This action only proves his good intentions. Love for his neighbour makes his virtue perfect; And knowing money is a root of evil, In Christian charity, hed take away Whatever things may hinder your salvation. â⬠Orgon and his family are about to be evicted from their own home by the unscrupulous Tartuffe when this particular dialogue was uttered. He was already at a loss of how Tartuffe could have done this to him. The irrepressible Dorine could not resist jabbing him verbally. To be deprived of oneââ¬â¢s property is to be given the chance to be eternally saved since the thing that causes sin is taken away from you. The person robbing you then is in fact doing you a favor and the robbery itself is a result of good intentions. This may be a tongue-in-cheek line but the irony is apparent in the situation where the quest for religiosity has led almost to Orgonââ¬â¢s total material depravity. IRONY IN THE PRINCESS OF CLEVES ââ¬Å"If any other motives than honour and virtue were necessary to induce you to persist in that character you have hitherto worthily sustained; I would tell you, that a reverse of conduct will disturb my happiness in a better world. But should (which Heaven forbid! ) this heavy misfortune be inevitable, I shall welcome death with joy, since it prevents my being witness to your disgrace (Lafayette). â⬠These last words in the deathbed of Madame de Chartres were part of a warning to her daughter of the pitfalls of falling in love while married. Rather than prevent the Princess of Cleves falling in love, it further arouses in her the need to experience what is romantic and for her which obviously she has not found from the Prince of Cleves. Aside from this irony of a warning prodding one to fall into the pit of forbidden love, Madame de Chartres or Madame Lafayette treated us with verbal irony in the last two sentences. She indicated that if the Princess will stray from the marriage path, she will be unhappy. Still she added she might be happy in death since it will prevent her from witnessing that which would bring disgrace to her daughter. This strong admonition is quite consistent with how society looks upon extramarital dalliances. The Princess was only guilty of mental infidelity. Ironically, it was not only her who suffered but her mother, who died of a broken heart, perhaps from a daughter who ignored her; husband, who died of jealousy; the Duc Nemours who suffered emotionally; and finally the Princess herself who entered a convent. The deathbed warning is ironically not helping the Princess. It destroyed everybody. Bibliography Lessing, G. E. (n. d. ). Nathan the Wise. Retrieved March 14, 2009, from PDF Books: www. pdfbooks. co. za Moliere, Jean-Baptiste Poquelin. The Project Gutenberg EBook Tartuffe. Project Gutenberg, October 26, 2008 (Posting Date). Lafayette, M. The Princess of Cleves. London: J. WILKIE, No. 71, St. PAULââ¬â¢S.
Thursday, October 3, 2019
Representation of War in the Media
Representation of War in the Media CHAPTER III : CASE STUDIES ââ¬Å"War is fought with the will of the government, competence of the armed forces and the support of the nationâ⬠Carl Von Clausewitz There is no doubt that the global reach and immediacy of the new media communications technologies and the ability to shape both national and international public opinion has made media a major player in limited conflicts. Such developments could be expected to significantly impact the way conflict is reported and debated by international community. Given the rapid progress and far reaching advances in communications over recent years, correct engagement with the media acts as a force multiplier for the commander on ground to achieve a more comprehensive success. On the other hand, the incorrect media engagement leads to loss of operational security and makes the task of the military commander much more difficult. The media representation of wars has significantly changed over last years. Previously being just an instrument of coverage and propaganda, now media are considered a competent weapon. The war of real objects is partially being replaced by the war of pictures and sounds, information war[1]. Now we shall examine few significant national and international conflicts, where the media extensively covered these operations by the Armed Forces. Some were a success story while others left much to be desired form the way the Armed Forces engage the media. The Gulf War Control of the media during the Gulf war followed the pattern that was established in the Falklands and refined in Grenada and Panama[2]. The pattern included secrecy in planning, demonisation of the enemy, exploitation of the media to enlist national and international support, and the exclusion of the media during the initial phases of the operation[3]. The resultant news vacuum was filled by officialà coverage favourable to the military. Later criticisms were stonewalled. In the Gulf, the media were excluded from the planning stages of the initial deployment and the deliberations leading to the change of war aims from that of the defence of Saudi Arabia to offensive action in Kuwait. The demonisation of Saddam Hussein was used to rally national as well as international support and the media was immediately co-opted into these tasks[4]. The Gulf also demonstrated the familiar pattern of exclusion of the media from the early action, when both the military and the administration were most vulnerable[5]. Before the commencement of the hostilities, USA set up the Joint Information Bureau to handle the media from a base in Dhahran. Journalists were formed into pools or Media Reporting Teams (MRTs).Guidelines were instituted, concurrent with the arrival of the first pool of reporters[6]. Subsequent guidelines gave detailed instructions how the information could be gathered. All interviews could be conducted only in the presence of a military escort, all reports, photos and videos had to be cleared by a security review system before transmission. Beyond these measures, however, the Gulf campaign lent itself to complete media management through absolute control over the means of communication, transport and access. So powerful was this weaponry that there was no need for actual censorship[7]. Censorship was achieved primarily through denial of access and delay in transmission, backed a blanket decision not to allow media access to any event that was a strictly controlled. This was offset by a flow of favourable military sourced information to fill the vacuum created by media restriction. Material ranged from information provided at carefully controlled briefings which bypassed journalists on the spot. The combination of credibility afforded by the briefings and novelty of the new weaponry was enough to satisfy audiences[8]. The realities of war and any real analysis were foregone in favour of a politicallyà acceptable, sanitised war which showed nothing but success. It was evident too thatà the military used the media not only to present its own policies in the best possible light, but to deceive and misinform the Iraqis. Both the administration and the military clearly benefited from this control. CNNs coverage of the 1991 Gulf War, when it became the worlds only instant chronicler of a major conflict, seemed only to confirm the formidable role played by Western news agencies in covering and framing international events. The impact of this kind of media coverage has been dubbed ââ¬Å"the CNN effect,â⬠referring to the widely available round-the-clock broadcasts of the Cable News Network[9]. Indeed, by the mid 1990s, some scholars and certain policymakers had come to the conclusion that CNN in particular was having a measurable impact on the way governments conduct world politics. This proactive engagement of media by the Pentagon ensured that the military remains immune from scrutiny but also garners the voter benefits for the politicians. The only caution is that this form of media containment or partial exclusion can only work for a limited period. If, as in Vietnam; and as may well have happened in the Gulf, such a limited conflict becomes protracted and involves high levels of casualties, then the ascendancy of the military may be challenged and broken as the global media brings to bear the full weight of its capacity for independent news gathering and communications. The 1991 Gulf war was the first televised war of the century wherein pictures of the night sky lit up with firing of weapons. Operation Desert Storm was the most widely and most swiftly reported war in history. In addition to being called the first ââ¬Å"CNN Warâ⬠this war also marked a turning point for the Americanââ¬â¢s view of that relationship. US demonstrated will and military potential to influence developing world in consonance of her policies.[10] The world saw the live footage of the 1991 Gulf war. CNN activities during the war were a classic example of the role that civil broadcasts and journalists can play in any future war. Media can be allowed selective access with a view to influencing the international opinion. The media enjoys the support of high technology equipment and access to credible media outlets. The CNN broadcasts provided useful inputs to put into operation diplomatic damage limitation operations to counter the fallout of adverse reports. The examp le at hand is the demonstration of her will and the military potential by the USA in influencing the world opinion, including engaging the media[11]. The first Iraqi war was totally covered by the media and the general opinion was that the media was focussing all their attention on the wars victory and retreating troops. Very few journalists looked after the Arabian people; in fact the Iraqi refugee problem was simply overlooked. In general, the media was very supportive of the American troops in the Persian Gulf. Though the reporting was positive, the coverage did not tell the absolute truth on the battle field. Journalists were more or less welcomed by the battalion commanders. The army was silent to ââ¬Å"embeddingâ⬠the media, while the Marine Corps was proactive and welcomed media attention. Public satisfaction with press coverage can be largely attributed to the increasing media savvy of the military leadership, who were able to successfully use news coverage to enhance the militaryââ¬â¢s image and win public support for its operations. General Schwarzkopf was a master at these press briefings. He analyzed the impor tance of the briefings and prepared himself mentally. He decided not to repeat the mistake made in Grenada, where the relations between media and the military had been eroded to an appalling state[12]. Kargil A Water Shed for Indian Media The Kargil conflict was Indiaââ¬â¢s first real war of the information age and it was significant for the impact and the influence of the mass media on the public opinion of both the nation states[13]. During this operation, both the military and the media were interacting for the very first time in the backdrop of the technological advances made in the last two three decades or so. The Kargil news stories and war footage were often telecast live on the TV, while many websites provided in-depth analysis of the war. This conflict became the first live war in South Asia[14]. The Indian Army tried to implement the ââ¬Å"poolâ⬠methodology of the Gulf war after consulting some reputed and esteemed media persons. There were daily briefings in Delhi through the operational staff and journalists were allowed to enter the war zone[15]. The site tours were discontinued after some time and media persons got total freedom to move around on their own except where their lives could be in danger. But unlike the Gulf war, there was to be no censoring of media reports and there was to be no deviation from the truth[16]. The military and the media did not indulge in any deliberate disinformation drive. But they effectively exposed Pakistanââ¬â¢s lies and disinformation tactics. The media for once highlighted defence requirements of weaponry and ammunition which otherwise do not get any significance for reporting in the normal sequence of events.[17]. The ââ¬ËKargil Warââ¬â¢, also brought into focus the significance of both the print and the electronic media[18]. The nation made a very clever use of the Internet and dedicated an exclusive Website www.vijayinkargil.com to show case the heroics of the Indian Army. Trained PR officers manned chat sites on the web to establish a real time inter face with the youths of the country for possibly the very first time. Television was able to invade the living rooms of the people to shape public opinion. The war received a human face because of the wide scale coverage of the war by the news channels like Aaj Tak, Zee News and NDTV Network. The media both Indian and overseas was predominantly compassionate to the Indian cause, with editorials in newspapers based in the west and other neutral countries observing that our western adversary was in principal answerable for the conflict[19]. Some analysts believe that Indian media, which was both larger in number and more credible, may have acted as a force multiplier for the Indian military operation in Kargil[20] and served as a morale booster. As the fighting intensified, the Pakistani version of events found little backing on the world stage. This helped India gain valuable diplomatic recognition for its position. Media reportage on Kargil converged around a single dramatic image of a nation at war. In the initial phase, news coverage was restrained on the logic of operational security. The Army permitted first media coverage on 15 May 1999. In Jun 1999, travel permits of press personnel were cancelled again quoting compromise of security. The failure of understanding was due to incorrect handling of media by army as well as character and content of reportage. There was a tendency to trivialise and sensationalise news by many sections of media. The semantics of reportage of certain events like return of six tortured bodies, led to a proliferation of exaggerated stories. However, media did not act as the force multiplier throughout. At crucial junctures, the over ecstatic media reported the crucial attack plans of the Indian army on the news in advance. This gave the all important operational intelligence to the adversary. The glaring example of this was the attack on Tiger Hill, where in after capture of Tiger Hill, the captured Pakistani troops revealed that they received the inputs about the Indian Armyââ¬â¢s plans through the news channels. Also the telecast at times showed the location of the artillery gun bases, deployment areas and the logistic installations which was then suitably interpreted by the enemy to bring out effective fire on these locations. Mumbai Terrorist Attacks of 26/11 Medias reporting of terrorist activities is fast becoming critical in todayââ¬â¢s scenario when no country is left untouched by terrorism. War on terrorism is a test for the Indian media. How much should be broadcast, whether broadcast of terrorist actions amounts to glorifying terrorism and violence and whether it incites people, creates new recruits and gives publicity to terrorists who seek to grab world attention are topics of debate across nations in the post 9/11 world. Similar debates have begun in India, more so after 26/11 Mumbai attacks. The well coordinated terror attack on Mumbai brings about essential lessons, both for the media as well as the Armed forces. The news media with a lack of understanding of where the medium can reach in such a situation, reported the move of National Security Guard (NSG) from Delhi to Mumbai being declared by the Home Minister[21]. There is increasing questioning of the medias conduct in the face of such attacks and more so after the live telecast of the 60 hour long Mumbai attacks. Concerned over the way many aspects of its operations got ââ¬Å"jeopardizedâ⬠due to live images being broadcast by TV during the 6- hour siege, the National Security Guard (NSG) pressed for restrictions on media coverage wherever its commandos are engaged to combat[22]. The case in point is the way NSGs operations at Nariman House were broadcast live. Questions were raised over the way Havaldar Gajender Singh fell to a terrorists bullet at Nariman House. As per the narration of incidents by an NSG commando ââ¬Å"TV broadcasted our commandoes landing from a helicopter on the roof over Nariman House. By the time our men landed and started taking positions, the terrorists were already waiting for us and opened fire[23]â⬠. In contrast the operations at Oberoi could be conducted more smoothly since TV channels were kept beyond a one-kilometer radius[24]. This zone was put under virtual curfew with no access allowed to television crews. The operations there took the least time, just under 30 hours, as compared to the other two places. As per NSG officials while terrorists holed up inside probably did not have access to live TV images on the second and third day of operations, they still had phones and were probably getting ââ¬Å"instructionsâ⬠from people watching those live images on TV. The media in turn can question the NSG that was there any spokesman of NSG to guide the media? The media showed what they saw. Can you blame them for showing what was happening? [1] Gulf War Was A Perfect Television War http://www.ukessays.com/essays/media/gulf-war-was-a-perfect-television-war-media-essay.php> [2] Young and Jesser, Loc cit, pp 280-281 [3] Ibid, pp 176 [4] Ibid [5] Ibid, pp189 [6] Ibid [7] Ibid [8] Aradhana Sharma, Journalism in Democracies during times of war: Examining the Role of Indian and US Media, Jamia Milia Islamia, New Delhi 2010 [9]The CNN Effect: Strategic Enabler or Operational Risk? Margaret H. Belknap http://strategicstudiesinstitute.army.mil/pubs/parameters/Articles/02autumn/belknap.htm [10] Brig VK Nair,VSM,Retd. War in the Gulf: Lessons For The Third World, Lancer Papers, pp 106. [11] Ibid [12] Vice Admiral J Metcalfe, The Press and the Grenada 1983, Franc Cass Co. Ltd, London pp 168 [13] Operation Vijay 1999 Victory Over Pak Treachery Col J P Singh, Retd News Bharti English 25 Jul 2014 [14] Kargil War ââ¬âWikipedia, online http://www.en.wikipedia.org/wiki/kargil_war. [15] Kargil War ââ¬âWikipedia, online http://www.en.wikipedia.org/wiki/kargil_war [16] Ibid. [17] Ibid. [18] Aradhana Sharma, Journalism in Democracies during times of war: Examining the Role of Indian and US Media, Jamia Milia Islamia, New Delhi 2010 [19]Article titled The Significance of the Kargil Crisis pp18-19, RAND Publications http://www.rand.org/content/dam/rand/pubs/monograph_reports/MR1450/MR1450.ch2.pdf [20] Ibid [21] Rahul K Bhonsle, Mumbai 26/11- Security Imperatives for the Future, New Delhi Vij Books (India) Pvt Ltd pp 50-51 [22] Media has Blood of NSG Commandoes http://nomadmolouges.blogspot.in/2008/12/media-has-blood-of-nsg-commando.html> [23] Ibid [24] Indian Media And War Maturity Essay http://www.ukessays.com/essays/media/indian-media-and-war-maturity-media-essay.php>
Wednesday, October 2, 2019
Information Technology Essay -- Telecommunication
Background Chapter Developments in computer and information technologies have created spaces wherein peoples across the world regardless of time and physical place can interact anytime and anywhere, thus, reshaping human interaction in the contemporary period (Whitworth, Banuls, Sylla & Mahinda , 2008). Recognising the integral significance of the development, it has been observed that in the last two decades, almost fifty percent of new capital investments of organisations are invested in information technology (Westland & Clark, 2000) and, as such, the computer and information technology is deemed as critical in the survival of businesses in the global market economy (Whitworth et al., 2008). In the same manner, keeping up with developments in information technology is also the concern of countries around the globe, not only because it is the platform that defines the contemporary the condition of the global society, but also because it is a competitive advantage that drives economic growth and development in the country (Dunning, 1992). In this regard, even the oil rich country, Kingdom of Saudi Arabia (KSA), has encouraged telecommunications investments as part of the diversification economic program of the country (CIA Fact Book, 2011). In fact, due to continued expansion of domestic economy and increase in population, the telecommunication sector of Saudi Arabia has pegged the interests of both the foreign investors and local capitalists (World Report on Investments, 2010). The Telecommunications Industry Among the Gulf Cooperation Countries (GCC), Saudi Arabia has the largest telecommunication market (Al-Shaikh, Malick & Chahine, 2009). The growth of Saudi Arabiaââ¬â¢s telecommunication industry is attributed to the ... ...13 billion. Mobily launched its services in May 2005, ending the year with 2.3 million subscribers, constituting 16% of the Saudi mobile market. By the end of 2008, we estimate that the company reached a 38% marà ¬ket share, with 13.02 million active subscribers. The company was the first to introduce Blackberry services and the iPhone in Saudi Arabia. It was also the first mobile Saudi operator to introduce value-added services such as MMS(picture messaging), location-based services (LBS), international roaming for prepaid subscribers, GPRS/GPRSEDGEroaming, and other services (Que et al., 2009). Mobily was the first Saudi wireless operator to launch in-flight calls abroad, through Aero Mobile, a specialized aviation mobile operator. It also initiated the first video mail service in KSA and pioneered the launch of 3.5G services in KSAin June 2006 (Que et al., 2009).
Romeo And Juliets Fate :: essays research papers
William Shakespeare wrote many great plays in his day. His tale of Romeo and Juliet portrays a tragic love. This play ends with the deaths of the key characters Romeo and Juliet, because of their forbidden love. Many factors contribute to their demise. The scene of when they first meet, the fight between Tybalt and Mercutio, and the final death scene all reveal why the two of them cannot be together in the end. Romeo and Juliet are ultimately killed because of their decisions and fate. The effects of Romeo and Julietââ¬â¢s decisions and fate are first apparent in the scene when they first come together. When Romeo says to Juliet in the Capulet party, "Thus from my lips, by thine my sin is purged" (I,v,108), and then he kisses her, it obviously exhibitions how they exercise their choice to love each other. After discovering each otherââ¬â¢s identities, Romeo proclaims, "My life is my foeââ¬â¢s debt" (I,v,119), and Juliet states, "My only love sprung from my only hate" (I,v,140). These lines foreshadow that there will be many impediments keeping them apart and eventually killing them both. It might be thought that the tragic ending is caused by them choosing to love each other. However, if fate does not bring them together in the first place, they will never have the opportunity to establish their love. Romeo and Juliet are affected by their choices and fate right from the beginning. Romeoââ¬â¢s actions and chance also cause the chaos in Romeo and Mercutioââ¬â¢s fight scene with Tybalt. When Romeo replies to Tybalt when he is first insulted and threatened on the street, "I do protest I never injure thee, but love thee better than thou canst devise" (III,I,67-8), it means he does not mean Tybalt any harm and is walking away from the fight. Then, Mercutio steps in for Romeo and starts fighting with Tybalt. Romeo gets between them, which allows Tybalt to kill Mercutio, and later results in Romeo killing Tybalt. It is very easy to point the finger at Romeo and accuse him of allowing Mercutio to be killed. His decision directly allows Tybalt to stab Mercutio, but he is trying work it out so no one will be injured, like peer mediation. Although he has no clue that he will do more harm, Romeo is actually trying to help. Thatââ¬â¢s where fate affects him. Also, it can be said that Romeo is entirely responsible for killing Tybalt.
Tuesday, October 1, 2019
Chromatography: How can we separate a mixture?
PurposeThe chromatography lab is to understand how molecules with similar molecular properties can be separated with paper chromatography. These differences will be interpreted to see the distinction of separate chemical substances.Pre Lab Questions1. Explain capillary action as it pertains to water and paper.Capillary action makes water draw up the paper. As paper absorbs water mixes with the solutions in the paper.2. What is the Rf value in a chromatography experiment?Rf = Distance travelled by the solute from the original line/distance travelled by the solvent from the original line3. If a molecule has a high affinity for the stationary phase, how is the Rf value affected?High affinity for the stationary phase affects the Rf value by lower Rf values.4. If a molecule has high affinity for the mobile phase, how is the Rf value affected?The Rf value will be higher5. Imagine you are doing a chromatography experiment with a polar solvent and a molecule containing a carbonyl group. Woul d the Rf value be high or low? Explain.The Rf value would be predicted as being low because it would tend to stick to the paper more.6. Why must a pencil be used, instead of a pen or marker when marking chromatography plates?A pencil is being used when parking chromatography plates because the ink could take part in reacting with the substance that it is placed in.7. Why should latex gloves be worn when preparing chromatography plates?Latex gloves should be worn to prevent contamination of the chromatogram8. The sample fine thin-layer chromatography plate, shown below, was prepared by spotting methyl red at R, sudan III at S, and bromocresol green at G. A single drop of each was placed on M. The plate was put in the developing solution until the solvent front reached 10 cm. Estimate the retention factor of R,S, and G, by measuring to the middle of the spot.0.625 ; .369. Describe how the TLC plate shown in question #8 was improperly prepared. For thin layer chromatography the adsorbe nt is coated as a thin layer onto a suitable support. This layer substance mixture is separated by elution with a suitable solvent.10. Suppose that, while one of the chromatography plates is developing, the beaker is accidently bumped, and the developing solution splashes on the TLC plate. Explain how this would influence the results.The results would shift dramatically towards the selected solution before.Materials List:Food dye solutions, 3 colors and an ââ¬Å"unknownâ⬠dye mixture Sodium chloride solution Isopropyl alcohol Paper chromatography plates Capillary tubes Pencil Five 250-mL beakers Plastic wrap Metric ruler Lab notebook Latex gloves, safety goggles, lab apronsProcedure: Activity 11. Wearing latex gloves, obtain ten chromatography plates, as directed by the instructor. Prepare each chromatography plate by marking lightly with pencil, a line at the bottom. Draw two small dots on the bottom line. Place the labels B (blue) and R (red) below the dots on the line. Repe at with the yellow food dye (Y) on another chromatography paper. Prepare the remaining eight plates the same way so that you have five sets of chromatography plates. 2. Properly prepare 250 mL beakers3. Cover 250 mL beakers with plastic wrap 4. Prepare 10 mL of below solution and place them in the beakers. Label with the mobile phase composition. a. 1% salt water b. 1% salt water/isopropyl alcohol (3:1) mixture c. 1% salt water/isopropyl alcohol (1:1) mixture d. 1% salt water/isopropyl alcohol (1:3) mixture e. isopropyl alcohol 5. cover each beaker with a piece of plastic wrap 6. Prepare 1 mL of each dye solution 7. Place one drop of blue food dye with the capillary tube 8. Do this for the ââ¬Å"Râ⬠(separate capillary tube) 9. Do this for the ââ¬Å"Yâ⬠(separate capillary tube) 10. Allow droplet to fully dry 11. Gently lower one of the plates into one of the 250-mL developing solution beakers, ensuring that the dry food dye spots are at the bottom.Ensure thatà no solv ent splashes onto the chromatography plate above the initial solvent level 12. Carefully re-cover the 250-mL beaker13. The solvent will quickly rise through the plate. Allow until à ¾ way 14. Once the solvent level has reached the maximum height, quickly remove the plate from the 250-mL beaker and mark the exact point of the solvent front before the solvent evaporates. (will take longer) 15. Mark the plate with the identity of the developing solution composition. Set the plate face-up to allow it to dry 16. Replace the plastic wrap cover on the 250-mL beaker17. Repeat steps 7-16 with each of the other developing solutions. Ensure that each plate is properly marked and labeled 18. Measure the distance between the bottom line and the upper solvent line on each plate. Record this information in the data table 1 for the corresponding developing solution 19. Identify and circle each spot corresponding to the indicator dyes on each of the chromatography plates 20. Measure the distance be tween the bottom line and the center of each indicator spot (B,R andY) on each plate. Record this data in the corresponding data table 21. Ask the instructor whether the chromatography plates should be retained or disposed off
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