How Much Co2 Lab free essay sample

Experimental: An Alka-Seltzer tablet was accurately weighed and recorded using a weighing boat and analytical balance. A fragmented piece between 0. 2100g and 0. 2800g was also weighed and recorded. 500mL of water was placed in a 600mL beaker. 80mL of water was then mixed with 20mL of 6M HCl in a 150mL beaker to create 1. 2M HCl. A 1. 5g piece of Alka-Seltzer tablet was then added to the HCl solution. After complete evolution of CO2, gravity filtration was used to catch all of the starch produced from the reaction. The buret was filled with the filtrated solution and the glass tube end of a rubber tube was inserted about 2 inches into the mouth of the buret. While keeping a finger over the buret mouth, the entire buret was quickly inverted and the tubing and mouth completely submerged into the water in the 600mL beaker. The buret was then clamped into place while double checking the buret mouth was under the water level and the rubber tubing was not pinched. We will write a custom essay sample on How Much Co2 Lab or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The stopcock was then opened extremely slowly until the water level in the buret dropped close to the 50. 00mL mark. This level was then recorded. 25mL of the prepared HCl solution was added to a 125mL Erlenmeyer flask, along with a 0. 5-1. 0g piece of Alka-Seltzer tablet. After complete evolution of CO2, the neck of the flask and rubber stopper were completely dried. The tablet fragment earlier weighed (between 0. 21-0. 28g) was then added to the flask followed by immediate insertion of the stopper to ensure a tight seal. 5 minutes after the CO2 has been generated, the new water level of the buret was recorded, along with the distance in inches between the buret and beaker’s water levels. Lastly, the prevailing atmospheric pressure, temperature of the water, and approximate volume of the room was recorded. Results and Calculations Table 1 Experimental Values Experimental Values| Measurements| Current pressure of the room| 29. 3 in. Hg| Mass of entire tablet| 3. 2545 g| Mass of fragment| 0. 2524 g| Buret water level (start)| 45. 62 mL| Buret water level (end)| 7. 50 mL| Distance between buret and beaker water level| 3. 625 inches| Temperature of the water/room| 21. 8Â °C| Pressure of water at 21. 8Â °C| 19. 587 torr| Length, width, height of the room| 1463cm, 792cm, 366cm | Conversions: Temperature of the Room: 21. 8Â °C + 273. 15 = 294. 95K Volume of the room: (l? w? h) = (1463cm)(792cm)(366cm) = 424 x 108 cm3 = 424073L Pressure of room: 29. 3 in. Hg x 760 mmHg x 760 torr = 744. 3 torr 29. 92 in. Hg 760 mmHg 29. 3 in. Hg x 1 atm = 0. 97927 atm 29. 92 in. Hg Calculations: PÂ °atm = Patm – ( in. of H2O )( 1. 87 torr/in. of H2O ) = (744. 3 torr) – (3. 625 in. )(1. 87 torr/in. ) = 737. 521 torr PCO2 = PÂ °atm – PH2O = (737. 521 torr) – (19. 87 torr) = 717. 934 torr x 1 atm = 0. 94465 atm 760 torr VCO2 = 45. 62mL – 7. 50mL = 38. 12mL = 38. 12mL x (1L/1000mL) = 0. 03812 L NCO2 = PCO2VCO2/RT = ( 0. 94465atm )( 0. 03812L ) = 0. 0014873 mol CO2 ( 0. 08206 L? atm/mol? K )(294. 95 K) Moles of CO2 one tablet produces: (moles CO2) x (mass tablet/mass fragment) = (0. 0014873 mol CO2) x (3. 2545g / 0. 2524g) = 0. 019178 moles CO2 in tablet Moles of the room: Nroom = ProomV room/RT = (0. 9727atm)(424073L)/(0. 08206 L? atm/mol? K )(294. 95 K) = 17,042. 7 moles in room of tablets required to fill room: (moles of room) / (moles of CO2 per tablet) = (17,042. 7 moles) / (0. 019178 mol CO2) = 8. 887 x 105 tablets Mass of NaHCO3 needed to fill room with CO2: = 8. 887 x 105 tablets x 0. 019178 moles CO2 x 1 mol NaHCO3 x 84. 01g NaHCO3 1 tablet 1 mol CO2 1 mol NaHCO3 = 1. 432 x 106 g NaHCO3 Discussion In order to find the number of tablets needed to produce enough CO2 to fill the room, the ideal gas law was required first to solve for the number of moles of CO2 in one tablet and second the number of moles of the room. To use the ideal gas law, the atmospheric pressure was adjusted for due to the lower pressure in the buret when compared to the outer atmospheric pressure. This unequalization of pressures, although corrected, may still be slightly off, thus potentially causing later calculation error when using the ideal gas law to solve for the moles of CO2. Difficulties in the experiment arose when inverting the buret and completely submerging it into the beaker of water. This is a likely place for error because keeping a finger over the mouth of the buret and sealing the mouth tightly enough during the inverting process was very difficult. If too much of the solution inside the buret leaked out, one would not have enough volume to start with (before the CO2 evolution) and thus would have to remake the solution and repeat the process. Another potential source of error would be the measurement of the size of the room. With so many objects (lab tables, carts, ceiling structures) that also occupy the space, it was very difficult to determine an accurate volume of the room. Thus, the actual number of tablets required to fill the room might be a little bit less when the objects taking up space in the room are considered. Additionally, if the gravity filtration failed to filtrate all of the starch from the HCl solution, the leftover starch could potentially cause a problem in the reaction when the tablet fragment is added to the solution, thus providing more possible sources of error. Another minor source is the sensitive nature of the analytical balance, possibly leading to incorrect weight measurements of the tablet fragments. Another is general human error, such as reading the volume on the buret when determining the amount of CO2 evolved from the fragment. Conclusion In conclusion, the overall experiment proved to be successful; depending on the calculated size of the room, the number of Alka-Seltzer tablets required to produce enough CO2 gas to fill it was able to be determined. The mass of NaHCO3 needed to produce enough CO2 was also able to be calculated due to the fact that one mole of NaHCO3 is equal to one mole of CO2. Using the ideal gas law, Dalton’s law of partial pressure, stoichiometry, and conversions, a result was calculated, thus proving that future experiments dealing with the calculation of CO2 evolved from Alka-Seltzer by using an inverted buret can be done successfully.

bus mgt Essay

bus mgt Essay bus mgt Essay N1065 Assessment: Briefing Sheet Introduction The purpose of this document is to give you guidance on how to complete the essay which is 50s% of the overall assessment of N1065 (with the other 50% coming from the examination). Essay Title Choose ONE of the management processes encountered during the course: Starting, Organising, Planning and Changing. Select a business organisation of your choice and explain how and how well it undertakes your chosen process. Points to note 1. The word limit is 1000 (+/- 10%). Neither the title page nor your reference list count towards the word limit but your in-text referencing will count. Please state the number of words you have used. Your marks will be reduced if you are under- or over -shoot the word limit. 2. The current university policies on plagiarism and late submission apply. The deadline is as listed in Study Direct. (BMEC School Office in Jubilee); 2 copies please. 3. Reference your work in a way that follows the advice and guidance available on the ‘3S’ (Study Success at Sussex) site or any received from your Academic Advisor and/or your N1065 seminar leader and/or in lectures. Furthermore we suggest you use ‘TURNITIN’ to review your own work. 4. The exact title as above should be displayed; not your own version of the title. 5. It is an essay and no sub-titles are expected. 6. In your introduction you should state clearly the management process you are going to write about and which organisation is the main focus of your essay. You should also give a very brief description of your selected organisation – but don’t waste too many word on this; it won’t gain you many marks (for example don’t go into detail about its history). 7. Try not to use overlong quotations – they soak up too many words. Use a range of authoritative sources and reference properly. Referencing lecture slides will bring very few marks; avoid this – and Wikipedia! 8. In your essay you are trying to show understanding and application of relevant concepts, models, arguments and theories. You should do this convincingly, and for a higher mark, critically. So far example don’t assume that you selected organisation gets it right all the time – you are being asked to give you view on how well the organisation deals with a process (tip: one way of doing this might be to compare it with how well similar organisations perform the process). 9. Remember it is an essay, not a report, so you don’t need to end with recommendations. But you should provide a conclusion, which reviews what you have found and draws the reader’s attention to the key issues – and these might be ‘problem areas’ or challenges for the organisation you have chosen. 10. Don’t hand in your essay until you have checked it through and proof-read it – but don’t hand it in late! This guidance is not definitive. You can seek the

112 mind paper Article Example | Topics and Well Written Essays - 750 words

112 mind paper - Article Example Geographical locations have influenced people’s habits, beliefs, and customs because they define the norms. Therefore, the degree of influence of cultural factors to consumer behavior varies in accordance to age, gender, marital status, religion, and location. People are increasingly adapting to the electronic environment and thus the increasing urge to own electronic gadgets. Apple iPhone is arguably the best electronic gadget in the current world and thus people across all age groups consider it worth possessing one. Since the new culture has been developed in accordance to owning expensive items, I bought the Apple iPhone because it was appealing and it did not in any way interfere with my cultural beliefs and wanted to fit in a social class that is associated with expensive and cool gadgets. Social factor stem from cultural factors because they involve family, reference groups, and role and status (Solomon et al, 2009). Family molds perception and influence of future buying behavior because it prepares people into understanding what is good and bad, what is necessary and leisure, and what preferences to consider. Reference groups include friends, and the rest of the world, which provide insightful information about new products and their efficiency thus influencing behavior. Everybody is talking about Apple iPhone and due to it, I was influenced to try out and see how it looks like to make sure I get first hand information for myself. Role and status is in relation with roles played by people in society. Currently, I am a student, meaning my role in society is to research and learn new things. This is a major factor in my decision of purchasing the Apple iPhone because I need to research wherever I go, take pictures which can be used as evidence in my assignment submiss ion, and interact with friends and family even when am away from them. Age and life style, occupation, life style,

UNREACHED PEOPLE GROUP PROJECT OF YEMEN Research Paper

UNREACHED PEOPLE GROUP PROJECT OF YEMEN - Research Paper Example The Joshua Project uses two percent of an indigenous population as the minimum percentage of a population that can impact an entire nation (Hoskins, 2005). Yemen unreached status stems from their topography which varies from hot coastal plains to cool mountains, and scorching deserts. This climatically challenges missionaries willing to spread the gospel there (Joshua, 2009). Secondly, their social and tribal structure has prevented penetration by Christians since all persons and goods passing through their towns are strictly controlled. They have various tribes which are ruled by Arab Chiefs who often fight each other. The belief system is the third reason for their unreached status. Despite being predominately influenced by Islam religion, the different Islamist sects complicate evangelism even further. Zaydis which is the largest sect is obsessive and warrior-like. They view all wars as a crusade against all non-Muslim believers to the extent that any Muslim converting and professing faith in Jesus Christ can be killed (McCarthy, 2004). This belief system and antagonism towards the Gospel creates major challenges to any evangelizati on efforts to this unreached group of people. The Great Commission forms the basis of missions in the Christian faith. Christ Himself commanded his followers in the Great Commission to go out and spread the gospel to the ends of the world. In a bid to obey this commandment, Christian missionaries travel to the furthest corners of the world so as to reach the unreached groups with the gospel message (The Yemeni Arabs, 2012). They have devised creative ways of reaching such groups for example extending hospitality, sinking boreholes, providing health care amongst other ways. Despite all this well intended cause, the missionaries experience unspeakable challenges as they try to reach out. They face rejection, persecution, battle with doubt and even death. On the

The Art In Cinema Film Studies Essay

The Art In Cinema Film Studies Essay Film is considered to be an important art form, a source of popular entertainment and a powerful method for educating   or indoctrinating   citizens. Film may be combined with performance art and still be considered or referred to as a film, for instance, when there is a live musical accompaniment to a silent film. The act of making a film can, in and of itself, be considered a work of art, on a different level from the film itself.. A road movie can refer to a film put together from footage from a long road trip or vacation. Intuitively, some films qualify as artworks and others do not. All film is art, though some of it is better art or higher art. This, it turns out, is not just a question for those with a special interest in film. It has interest for aesthetic value more broadly, because film can serve as a test case for definitions of art. Some theories of art seem too restrictive, because they prevent us from classifying certain films that are aesthetic masterpieces into th e category of art. The intentions of the creators in attaining status as art. Sometimes, however, creators do not conceive of their creations as primarily belonging to the class of artworks, but viewers come to recognize that they can be fruitfully regarded in this way. This is not to say that a work becomes art when its taken up by a art-consuming audience. A theory of that kind would face the difficulty of saying which audiences had the power of conferring art status. Moreover, audiences do not transform works into art, rather they discover that a works deserves to be regarded in that way. If this intuition is right, the key to understanding what makes a film count as art is what goes on in this discovery process. India is well known for its commercial cinema, better known as Bollywood. Almost every Indian is well versed with onscreen running around the trees singing songs, the fight sequences, twins meeting each other pachchees saal baad, topped with some dose of mush and lots and lots of spice. However there are other types of movies which focus purely on story- minus the masala. This genre is sometimes referred as Pheeka or Bina namak mirch wala (bland) kind of cinema. In addition to commercial cinema, there is also Indian art cinema, known to film critics as New Indian Cinema or sometimes the Indian New Wave. A true admirers of cinema and people who consider movie-making as an art call it the Offbeat or The Art House Cinema. Many people in India plainly call such films as art films as opposed to mainstream commercial cinema. From the 1960s through the 1980s, the art film or the parallel cinema was usually government-aided cinema. Such directors could get federal or state government grants to produce non-commercial films on Indian themes. Their films were showcased at state film festivals and on the government-run TV. These films also had limited runs in art house theatres in India and overseas. The Indian Art Cinema or the New Wave sometimes called has had a humble beginning. This genre doesnt boast of foreign locales, hopelessly expensive clothes or the big star cast. The sole strength of these kind of films is the story. The Indian Art Cinema has beautifully transformed and re-invented itself. From socially relevant topics of Child Marriage, Dowry, Female Foeticide, Widow Re-marriage to a simple love story. The Art film-makers have done it all. Its amazing to see how some of the very talented film-makers have gifted their audiences with some of their magnificent work. There is Shekhar Kapoor who beautifully told the story of a man struggling to make his illegitimate son a part of his family (Masoom) and we got one of the all time masala entertainers Mr India from the same director. The person who gave us Zubeida, Ankur and Manthan came up with something as entertaining as Welcome to Sajjanpur and the very recent Well Done Abba. The Gen-X today are more intelligent and open to a wide variety of topics. At the end of the day the purpose of the film and the audience should be served. The audience wants a good story and a really good way of putting it and thats what the film makers are supposed to do. Yes masala flicks are welcome but too much of masala can cause acidity! A good mixture of masala movies and intelligent cinema is what the audience wants. Brainless comedies work, but again not always. In this new context of art-house appeal to the mainstream, of limited box-office appeal is striking, if not, perhaps, inaccurate. On the other hand, general conceptions of art house have come to describe films simply on the basis of their production outside the Bollywood system, regardless of their status as conventional dramas or slightly offbeat comedies. Surely a film with a 30-crore budget, Bollywood stars, and wide release does not fit the standard art-house profile. And yet a documentary about global warming w ith art house written all over it-complete with its charisma-challenged star, Al Gore-enjoyed sold-out screenings at huge multiplex theaters across the globe. From the very inception of this genre, there has been a difference between art and commercial cinema. However with changing times this gap has been bridged. The themes of art movies have witnessed a change. The earlier trends in Indian Art movies were more specifically related to the Indian audience, while the recent incline is towards the global concept. Quite ideally therefore the Indian Art cinema has gradually emerged itself as a reflections of the happenings in the society. Now many of these Art Movies or small films are grossing major profits and competing for space at the big multiplexes as well as finding their audiences at the small cinemas devoted to specialty fare. What will be ideal is an exclusive chain national art house cinema multiplexes to mark the new era of these specialized cinema. The audiences today look out for good films rather than the serious or popular films. Hence once a while a multi-starrer movie bombs and a small budget movie like Aamir is much appreciated by the cine goers. The need for better subjects, the desire to watch something more feasible on the screen and the boredom that has set in with the regular candy floss cinema are some of the reasons for this apparent change. If this trend continues then the day is no far when there will be no commercial cinema or art cinema, but just good cinema and bad cinema. India is full of art and that is depicted in Indian movies. But a commercial or non commercial movie, both need art. Commercial movies need art in form of background, sets, getting a shot right. Both have got distinct way of describing art through movies. There are a number of genres and styles of Indian cinema that a viewer encounters, such as, romantic comedies, gangster films, horror films, westerns, melodramas, musicals and historical films. While some of these genres are present in Indian cinema, often as a consequence of the impact of the western films, the Indian filmmakers have also created some styles of their own, that are acknowledged as their own. This is clearly discernible in the popular tradition of filmmaking in India. The knowledge of Indian cinema provides an entry into the thought-worlds and performance-worlds to the people interested in this art. Many Indian film directors, right from the pioneers such as Dadasaheb Phalke to the modern ones like Yash Chopra, have deployed their creativity along with traditional forms of dance mime, folk classical music to enhance the communicated experience. Indian popular cinema has evolved into a distinctively Indian mode of entertainment by imaginatively amalgamating music dances also and the works of veteran directors like V.Shantaram. Guru Dutt and Raj Kapoor bear a testimony to this fact. So, through Indian cinema one can also enter the larger world of Indian aesthetics. Film makers like Ketan Mehta has made a movie on the life of 19th century painter Raja Ravi Varma named it as Rang Rasiya. Its a very artistic movie showing us the reality of the society in the 19th century. He had also directed Mangal pande which was againg very artistic from the sets to costume everything gave you the feel on the 18th century. Aushitosh Gowarikars Jodha Akbar is another epic story in which art played a very important role. To add on the list is devdas Sanjay Leela Bhansali did a brilliant job with art direction. Indian cinema has presented a detailed version of India from its different historical movies to its present scenario movies. The distinct genres of films depicted by the different filmmakers have helped in the study of India from a different and distinct angle of vision. Thus, one cannot help but realize the fact that indeed it has been the old traditions and the cultures that have actually framed the Indian cinema, which have been an encouragement to uplift India and make it one of the renowned countries in the world. By seeing the cultures and traditions of the distinct societies, people can examine their own country`s culture with fresh eyes and with a special vision and approach.

The Digital World Essay -- Technology Machines Internet Papers

The Digital World The digital world of today can be understood as a product of late-Victorian construction of the machinery of information organization combined with Modernist visual forms. In his doctoral dissertation, The Engineering of Vision from Constructivism to Computers, Lev Manovich, professor of New Media at the University of San Diego, states it is the influence of Modernist visual forms, mainly Soviet era Constructivism, that shapes the look of the current digital world (e.g. the Internet). Professor Simon Cook of Duke University, in his recent paper, Late Victorian Visual Reasoning and a Modern History of Vision, argues that Manovich overlooks the importance of the Victorian period in influencing the aesthetics of our present digital design. Cook bases his argument on the concept of an orderly and well-catalogued Internet, as if the system had been developed in nineteenth century Britain. However, due to the chaotic, disorganized and ever-changing look of the digital world, the argument of a Victorian based system is flawed. The late nineteenth century does not have the impact Cook believes it does, whereas Manovich remains on track in his original argumen t. Still, Manovich’s ideas can only be regarded on a temporary basis, because the face of the digital world has changed drastically since its development, and will continue to in the near future. Before exploring the look of the current digital world, it is first important to look at its physical development. I will concentrate mainly on the Internet and the more recent phenomena of the World Wide Web, although software look also has a significant role. This concentration follows from my prediction of the future look of computers, which will be more web-bas... ...ent. Current world politics and economics may play just as a significant role for the future digital world as Soviet Constructivism does for the current one. Bibliography Cook, Simon, online papers: http://www.duke.edu/~sjc68 Cook, Simon, Late Victorian Visual Reasoning and a Modern History of Vision Linton, Berry; Vinton, Carl, et al. A Brief History of the Internet, http://www.isoc.org/internet/history/brief.shtml Manovich, Lev, online archive: http://www.manovich.net. Manovich, Lev, The Engineering of Vision from Constructivism to Computers, online Ph.D. Dissertation, 1993. Manovich, Lev, Database as a Symbolic Form Manovich, Lev, Navigable Space Manovich, Lev, Avant-Garde as Software Richards, Thomas. The Imperial Archive Smith, David, Constructivism and Suprematism, http://users.senet.com.au/~dsmith/constructivism.htm

Global awareness about education Essay

Education has become the foundation for socio economic development in the 21st century. Awareness in education varies with each state and continent, South Asia as a region is home to a mass of illiteracy with some 412 million illiterate adults while the situation in Europe or North America is completely opposite. But in order for us to make these estimates we have to keep in mind the definition of a literate person. Literate person is defined as one who can write a simple letter and read a mere newspaper but then again, there is no mechanism to confirm the credentials of a person who claims to be literate. AWARENESS IN PAKISTANI SOCIETY Pakistan’s illiteracy rate remains not only alarming, but concerning too, as over the years it has failed to make a noticeable improvement and still remains at 57%. 25 million children are currently out of school while 3 million have never seen the inside of a classroom. Only a small percentage of individuals exist, and those too from the elite class who afford high grade private education while the majority have never even joined school. The conditions in the rural areas are the worst as the people are not aware of the benefits and the government’s impotency only encourages this. Lack of education only gives rise to other issues such as a higher crime rate; failure to improve the percentage of women educated also keeps them not only suppressed but more prone to domestic violence. Under the 18th amendment, the government re-emphasizes the importance of education but seized to make such a difference. To summarize, it is lack of opportunity and will that serves as a barrier to education and literacy.