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Lincoln vs. Davis Essay

Davis versus Lincoln The administration styles of Jefferson Davis and Abraham Lincoln extraordinarily affected the result of the Civil War. ...

Wednesday, December 25, 2019

Review of Charlottes Web - 1259 Words

Review of Charlottes Web ‘Charlottes Web by E. B. White was first published by Hamish Hamilton in 1952. It is a classic childrens novel which won the 1970 Laura Ingalls Wilder Award (Amazon). It is beautifully written with a great mix of seriousness, excitement and comedy. Even though this book is now over fifty years old it is still a wonderful book for children as its main themes of friendship and hope will always be current. The story is about Wilbur, a runty farm yard pig, who is saved from death by Mr Arables eight year old daughter, Fern. Fern cares for and loves Wilbur as if he is a pet but eventually has to ironically send him to suffer another fate of death on Mr. Zukermans farm. Fern remains a main character who†¦show more content†¦There are only a small number of illustrations but these add character to the story. It is very well written books with one of the best first lines in any book I have ever read: Wheres Papa going with that axe? (page 1) It gives very realistic images of what is going to occur and grabs the readers interest immediately. This is the first threat of death for Wilbur but, interest is maintained as the threat continues and Wilburs naivety and innocent make him a character that you want to see saved. As well as the main characters the other characters also help to maintain interest. Comedy comes from the geese and the rat, Templeton. Templeton is a greedy hoarder who the other animals distrust and, who wouldnt do anything for anyone without something in return. However, without his help Charlotte wouldnt have been able to save Wilbur. This teaches you that although you might always want to do something, when it helps others you should do, yet another simple message in the story. The geese are noisy and talk in a repetitive way, for example: ‘….toasty-oasty-oasty warmÂ… (page 35) and, ‘Im no flibberty-ibberty-gibbetÂ… (page 35). White includes two children Fern who is eight years old and can hear what the animals are saying and, her brother Avery who is ten years, and is very ladish helping to make the storyShow MoreRelatedReview Of Charlotte s Web 1751 Words   |  8 PagesCharlotte s Web was written by E.B. White. This book is about a spider named Charlotte and a pig named Wilbur that is going to be killed but is saved by Charlotte when she makes a web that says â€Å"Humble, Radiant, and Terrific.† People from all over town would come to see Wilbur and the web. Wilbur becomes famous and he gets to go to the fair, and while they are there, Charlotte lays her eggs and dies. Wilbur takes the eggs home, and when they hatch the newborns start to leave, but three of the babyRead MoreChildren s Literature : Research Paper1570 Words   |  7 Pagesbooks to mention that his animals made it into his books are Stuart in Stuart Little, Charlotte in Charlotte’s Web. His three books for children Stuart Little (1945, film 1999), Charlotte’s Web (1952, film 1973 and 2006), and The Trumpet of the Swan (1970)—are considered classics, featuring lively animal protagonists who seamlessly interact with the human world (Encyclopedia Britannica ). The book Charlotte’s Web is a story about a pig named Wilbur and his friendship that he has with this littleRead MoreReview of Charlottes Web by E.B. White Essay1182 Words   |  5 PagesReview of Charlottes Web by E.B. White ‘Charlottes Web by E. B. White was first published by Hamish Hamilton in 1952. It is a classic childrens novel which won the 1970 Laura Ingalls Wilder Award (Amazon). It is beautifully written with a great mix of seriousness, excitement and comedy. Even though this book is now over fifty years old it is still a wonderful book for children as its main themes of friendship and hope will always be current. The story is about Wilbur, a runty farm yardRead MoreA Critical Analysis Of The Yellow Wallpaper By Charlotte Perkins Gilman1051 Words   |  5 Pages Patel 1 Aditi Patel 3/14/16 English 102 Esposito, Carmine. A Critical Analysis of The Yellow Wallpaper by Charlotte Perkins Gilman Charlotte Perkins Gilman was a famous social worker and a leading author of women’s issues. Charlotte Perkins Gilman s relating to views of women s rights and her demands for economic and social reform of gender inequities are very famous for the foundations of American society in the late nineteenth and early twentieth centuries. In critics GilmanRead MoreEssay on A Womans World in Jane Eyre by Charlotte Brontà «1145 Words   |  5 Pagesâ€Å" . . . Women feel just as men feel . . . they suffer from too rigid a restraint, too absolute a stagnation . . . † (Brontà « 129-130). Charlotte Brontà «, one of six Brontà « siblings, was a feminist author who lived and wrote during the beginning of the nineteenth century. It was a time when England was going through a slow but significant change, mainly surrounding the Industrial Revolution, but still preceding the days of any major feminist movements. Brontà « was angered that she had to write underRead MoreBleeding Gre en and White844 Words   |  3 Pages The history of The University of North Carolina at Charlotte started back on September 23, 1946. A woman by the name of Bonnie Ethel Cone founded UNCC on that date. The size of the school has grown since 1946 and there is no religious affiliation to this college, students may practice what they please, and when. UNCC does have a mascot, his name is Norm the Niner. UNCC has a pleasant environment. Typical classes are not an intimidating size, being usually a 19:1 student-faculty ratio andRead MoreThe Case Of Cannabidiol ( Cbd )1291 Words   |  6 Pages(hereafter referred to as CBD) is best told by the story of a little girl named Charlotte Figi living in Colorado; a state where voters legalized marijuana in 2012. In an article written by Maa Figi (2014), Charlotte’s mother shares her daughter’s battle with Dravet syndrome, a gene mutation causing her to suffer from prolonged epileptic seizures commencing when she was three months old. By the age of five, Charlotte had â€Å"significant cognitive and motor delays, required a feeding tube for nutritionRead MoreCHARLOTTE BRONTE AS A HIDDEN WRITER INTRODUCTION Charlotte bronte was an English novelist and poet800 Words   |  4 PagesCHARLOTTE BRONTE AS A HIDDEN WRITER INTRODUCTION Charlotte bronte was an English novelist and poet and the eldest of the three bronte sisters.even after a strenuous childhood she managed to write and publish her works and gain fame. Being a Victorian writer, obviously it was a difficult task for her to take her own stand in a male dominated era. After many rejections and disparages she decided to change her pen name from charlotte bronte to Currer Bell. The main reason behind writing as a male wasRead MoreIs John A Good Husband? Essay1100 Words   |  5 PagesThroughout the short story, The Yellow Wallpaper by Charlotte Perkins Gilman, we see a woman handicapped by depression and mental illness. We see how the narrator and John interact as husband and wife and as doctor and patient. From the surface, it seems as if John is a kind-hearted man wanting what is best for his wife, and willing to do whatever it takes to make her better again. But as the reader looks closer and the story progresses, John becomes more of a handicap to his wife than the illnessRead MoreRestaurant Review Essay783 Words   |  4 PagesThe Big Cheese Italian Restaurant Review Charlotte Perkins Professor Alexandra Alessandri English 1101 11 October 2011 Charlotte Perkins Professor Alexandra Alessandri ENC 1101 6 November 2011 The Big Cheese Italian Restaurant Review The sweet smell of garlic, tickles your nose as you park your car. Its sweet aroma guides your taste buds to the unassuming establishments were the Italian flavor lingers in the air. First Impression: The Big Cheese Italian Restaurant lives

Tuesday, December 17, 2019

The Relations between Science and Religion Essay - 1630 Words

The relations between science and religion. Humans are servant of God who descended to earth as its inhabitants. Humans are creatures of God are given the advantage of reasonable than other creatures. With that human minds can do more than any other creature. At the beginning of its creation, only human beings who do not know anything and therefore people need a hint for his life. Humans need a guideline in order to survive life in the world and in the hereafter. Guideline for humans is religion. Religion is a hint of life, encompasses all aspects of human beings, including science. So many recent scientific discoveries in modern times was already confirmed. With scientific evidence in accordance with the scriptures, it can be†¦show more content†¦So ilmuadalah knowledge that meet specific characteristics and terms are standardized into a science , the two terms are combined into one word. Can be formulated also that science is as common knowledge ilmiahdan merged into science directly. The application of science in the world modeern has produced many technologies that make peoples lives healthier, more comfortable, and more secure. While the science is also one way to seek the truth, which is the objective truth. Even so, science tends to be autonomous so therefore he is often seen as the only path to truth. As a result we often face a clash between science and religion in the field of theology. The problem is, science is actually just talking about the objective reality of nature and humans. When in fact the religion talk about a whole person, body and soul are, and the broadest nature, ie the real nature and the supernatural, as well as kenyataam entirely, namely nature and god of creation. So in fact there is the intersection between the two, yait on nature and human problems. There is no contradiction between the two. But in the course of history several centuries after reinaisans, scientific revolution, followed by the industrial revolution, our scientific knowledge about ourselves and our natural environment has changed dramatically. Unfortunately the new picture for a lot of people tend to negate the description given by the theology of worldShow MoreRelatedRelation Between Science and Religion Essay4079 Words   |  17 Pageson What is the Relation between Science and Religion William Lane Craig Examines several ways in which science and theology relate to each other. Back in 1896 the president of Cornell University Andrew Dickson White published a book entitled A History of the Warfare of Science with Theology in Christendom. Under White’s influence, the metaphor of â€Å"warfare† to describe the relations between science and the Christian faith became very widespread during the first half of the 20th century. The culturallyRead MoreEmile Durkheim s The Elementary Forms Of The Religious Life1608 Words   |  7 Pagesexamines religion through a social viewpoint, while Claude Là ©vi-Strauss’s The Savage Mind compares modern and â€Å"primitive† thought. Although their topics of interest differ, both works similarly rely on science to explain their anthropologic theories. Science serves as a useful reference point, since it embodies modern mode of thinking with high objectivity. Therefore, these writers can expand on their analysis of other ways to perceive the world by comparing and contrasting with science. The relati onsRead MoreMonotheistic religions, especially Judaism, Christianity, and Islam promote the belief in One God;1600 Words   |  7 PagesMonotheistic religions, especially Judaism, Christianity, and Islam promote the belief in One God; all that exists is because of God. Through prophets and scripture, God portrays moral goodness and truth. Essentially, these three religions believe that God speaks to us, unveils God’s Being, and seeks to guide us through life. In turn, humans should embody the moral goodness and excellence that is revealed to us by God. These religions are taught based upon both scripture and reason. When readingRead MoreThe Secularization of the Western World Essay1680 Words   |  7 Pagesmeanings over the past eighteen centuries. In today society, the world secular is used to describe a world thought to be in motion, the moving away from religious influence in everyday life. Thus, my definition of the term secularism is not denouncing religion to an anti-religious belief but rather viewing secularism as a point of view that reflects the change in society to seek answers and meet the needs of people without taking on religious perspective. â€Å"The shift towards secularism does not mean thatRead MoreI Appreciate Barbour s Praiseworthy And Toilsome Effort914 Words   |  4 PagesIII. Critique First of all, I appreciate Barbour’s praiseworthy and toilsome effort to put theology and science in a meaningful and fruitful dialogue, by seriously taking account of both continuities and discontinuities between scientific metaphors and religious metaphors. For Barbour, because both disciplines have continuities and discontinuities they can contribute to our more comprehensive understanding of the reality of our experiences in the world through their metaphorical relationshipRead MoreBecause Religion Is A Difficult Concept To Define, It Faces1709 Words   |  7 PagesBecause religion is a difficult concept to define, it faces several criticisms. To this day, it has never been possible to find a definition of religion that pleases the majority of the population. However, researchers in this area have never felt the need to have a definition to carry out their research. Religion is a somewhat different concept of economy, politics or history and the difficulty of defining it comes from the fact that these are not index terms but rather general concepts thatRead More what is theology Essay995 Words   |  4 Pages What is theology? What does it explain if anything? According to the encyclopedia, it is related to the Greek Religion. In Christianity, the systematic study of the nature of God and Gods relationship with humanity and with the world. Although other religions may be said to have theologies, this is a matter of controversy within, for instance, Judaism , which holds that God is unknowable. This article will therefore confine itself to Christian theology. The development of theology in ChristendomRead MoreThe Star by Arthur C. Clarke and the Juxtaposition of Science and Religion704 Words   |  3 Pages When dwelling into the explorations about science and religion, one can find it quite amusing. If science and religion are to continue to coexist it seems opposed to the conditions of modern thought to admit that this result can be brought about by the so-called water-tight compartment system which, even at the present time, is frequently extolled or considered possible.(Boutroux, 406) Two powerful forces that coexist yet each of them deny one another, but yet they define one another. TheRead MoreHow Do We Know and What We Know? Essay734 Words   |  3 Pagesdifferent situations. Vocabulary and speech pattern between friends or relatives may be informal and familiar whereas communication with someone of different generation, class or age group is likely to be specific to the particular relationship, place or moment. Knowledge is shaped by social institution and by the power groups and individuals to influence the generation and acceptance of knowledge such as legal system, and education system. Religion is a special case of authority over knowledgeRead MoreCan Religion and Science be Compatible?1326 Words   |  5 PagesCan Religion and Science be Compatible? Accepting the compatibility between science and religion is a tactic used by those who instinctively fear that a manifest conflict between the two areas would endanger the future of science. They are worried about the possibility that scientists would not receive any financial support or that science classes in schools might be replaced with hours of religion. A huge number of atheist scientists are aware of the negative role, that they have irrational ideas

Monday, December 9, 2019

Bioscience Bacteria and Viruses

Question: Discuss about theBioscience for Bacteria and Viruses. Answer: Introduction: Fever is a condition in which body temperature rises above the normal range of temperature. Normal body temperature is in the range of 37.5 and 38.3C. In fever temperature rises upto 41C. Peter is infected with influenza virus. This virus causes inflammation in the infected cells. Due to inflammation there is rise in the prostaglandin E2 (PGE2), which acts on the hypothalamus which is a temperature controlling centre of the body and hypothalamus produces response to the body and increase in the body temperature. Influenza infected cells also secrets proilflammatory cytokines like tumor necrosis factor- (TNF-) and interferon. These proinflammatory cytokines also act on hypothalamus and produces fever in the Peter. Fever stimulates immune system - Due to fever there is the stimulation of immune system. In this activated immune system, there are increased and activated CD8+ cytotoxic T cells. These cytotoxic lymphocytes act as defense mechanism and eradicate infected viruses. Fever stimulates mucus formation - In the state of fever, there is the increased formation of mucus. This mucus acts as check point for the entry of microorganisms in the body. With this increased mucus formation, fever helps to prevent entry of microorganisms in the body (Cunha, 2007). Peter developed sore throat and to prevent allergies generally antibiotics used to be prescribed. Sore throat can be due to bacterial infection also. Hence to cure sore throat, Peter was prescribed with antibiotic phenoxymethylpenicillin. Phenoxymethylpenicillin is a beta-lactum antibiotic. These antibiotics kill bacteria by inhibiting cell growth. Bacterial cell is protected by peptidoglycan, a component of cell wall which provides rigidity and support to the cell wall. This peptidoglycan provide support by cross linking with other peptidoglycan and forming a net like structure. This cross linking is facilitated by enzyme called DD-transpeptidase (penicillin binding protein-PBP). This cross linking repeated several times in the bacterial life cycle. Phenoxymethylpenicillin inhibit bacterial growth by binding to the DD-transpeptidase enzyme, thus crosslinking is inhibited and ultimately bacteria killed (Bullock Manias, 2014). Antibiotics generally kill bacteria or retard their growth by interrupting their metabolic process. These processes include cell wall formation in case of penicillin class of antibiotics and protein synthesis in case of streptomycin. As in case of viruses there is no metabolic process, antibiotics doesnt act on viruses. Moreover, viruses are only protein wrapped DNA molecules and there is no cell wall in the viruses. Also, viruses can survive devoid of metabolic pathway and solely depend on the metabolic pathway of the infected host. Antibiotics cannot act on these hosts metabolic pathways. Hence, antibiotics cannot be used in the viral infection (Lehne et al., 2013). Peter might have contracted influenza virus either inhaling the contaminated air of influenza virus or by direct hand-to-hand contact with the influenza virus. Aerosols produced by the infected person in the size range of 0.5 to 5 m in diameter can be sufficient to produce infection and one droplet is also enough to produce infection. In hand to hand model virus can be transmitted through banknote, switches, computer keyboard and any other most frequently used articles. Prevention of mode of transmission of influenza virus can be achieved by improving personal hygiene. Personal hygiene comprises of avoiding touch to openings such as mouth, nose and eyes, frequent washing of hands with soap and alcohol, covering at the time of coughing and sneezing, staying away from infected people, avoiding splitting and avoiding smoking. Sanitizing room and environment are the other ways through which influenza can be prevented. Surface sanitization can be done using alcohol and also quaternary ammonium compounds can be used along with alcohol, which produces long duration sanitizing effect (Boland et al., 2011; Lee Bishop, 2016). Redness : Sore throat is the most common symptom of influenza infection. Influenza viruses after entry into the body bind to the sialic acid through hemagglutinin on the epithelial cells of throat. This hemagglutinin is cleaved by protease and cell brings in this virus through a process called as endocytosis. Later inflammation is produced in the tissues and produces proinflammatory markers such as TNF- and interferon. This produces vasodilatation of small blood vessels and increased blood flow to the throat. This results in the redness of throat. Swollen: Infection of influenza virus causes inflammation of the throat. Due to inflammation in the tissues of throat, there is the increased permeability of blood vessels in the throat. This increased permeability of the blood vessels leads to the exudation of plasma proteins and fluid into the tissue and results in the swelling. Hence there is swollen throat observed in the case Peter. Having a Patchy Covering of Yellow-White Exudates Over his Tonsils: Sore throat is the common symptom of the tonsillitis, which is inflammation of the tonsils mainly caused by infection of viruses. Tonsils are the situated on either side of the back of the throat. Tonsils are the group of lymphatic tissues which helps body fighting against infections and are the first line of defense of immune system. Tonsils possess M cells on their surface which perform function of antigen capture and bring pathogens produced by antigens on its surface. Due to the accumulation and calcification of infected bacteria, dead cells and dirty particles on tonsil pockets or grooves, there is the formation of tonsil stones. These tonsil stones are patchy covering of yellow-white exudates. In case Peter, there is the influenza infection and this leads to the tonsillitis and consequently patchy covering of yellow-white exudates over his tonsils (Craft et al., 2015; Marieb Hoehn, 2016; Porth Matfin, 2014; WHO, 2015). Bacteria possesses all the requirements in the form of cell organelles necessary for their growth and multiplication. These requirements include genetic blueprint in the form of DNA and other tools like ribosomes, proteins, etc. Asexual reproduction is the most common method for bacterial replication, however few bacteria reproduce sexually and plasmids genetic material carried among the bacteria. Binary fission is asexual method of reproduction in bacteria which occurred by division of single cell into two cells. There are four phases in the life cycle of bacteria like lag phase, log phase, stationary phase and death phase. Viruses carry information like RNA or DNA in the form of protein packets and membrane coating. Viruses mainly depend on the host cell for their replication as viruses dont have their own machinery for replication and lack of active metabolic system. These viruses attach themselves to the host cells with help of their legs and inject genetic material which is present in their head into the host cells. This injected genetic material in the host cell utilizes host cells machinery to produce viruses proteins or on the other hand this genetic material get integrated in the host cells DNA or RNA and get translated in the future. At a particular time cells exceeds capacity to hold viruses and they burst out. There are six phases in the life cycle of viruses like attachment, penetration, uncoating, replication, assembly and release (Rogers, 2011). References: Boland, M. (Director), Santall, J. (Presenter), Video Education Austrlasia. (2011). Infection control in healthcare [Videorecording]. Bendigo, Australia: VEA. Bullock, S., Manias, E. (2014). Fundamentals of pharmacology (7th ed.). Frenchs Forest, Australia: Pearson Australia. Cunha, B.A. (2007). Fever of Unknown Origin. Informa Healthcare, Taylor Francis. Craft, J., Gordon, C., Heuther, S., McCance, K., Brashers,V., Rote, N. (2015). Understanding pathphysiology 2. Chatswood, Australia: Elsevier. Lee, D., Bishop, P. (2016). Microbiology and infection control for health professional (6th ed.). Melbourne, Victoria: Pearson Australia. Lehne, R.A., Moore, L., Crosby, L., Hamilton, D. (2013). Pharmacology for nursing care (8th ed.). St. Louis, Mo: Saunders/Elsevier. Marieb, E.N., Hoehn, K. (2016). Human anatomy physiology (10th global ed.). Harlow, UK: Pearson Education. Porth,C.M., Matfin, G. (2014). Pathophysiology: Concepts of altered health status (9th ed.). Philadelphia, PA: Lippincott Williams Wilkins. Rogers, K. (2011). Bacteria and Viruses (1st ed.). Britannica Educational Publishing. WHO (2015). Influenza. An unpredictable threat. Retrived from https://www.who.int/topics/influenza/en/ on 4th September 2016.

Sunday, December 1, 2019

Lab Report Boiling Point and Melting Point Essay Example

Lab Report Boiling Point and Melting Point Paper Should be based on observations made during the experiment. Evaluation of laboratory exercise type: On a separate page, each student should write a brief comment regarding 1) which lab method you prefer (inquiry-method, i. E. Problem-solving oriented, or traditional lab. Like this one. 2) group size (individual labs or small-group labs) 3) report writing individual or small group 4) Any negative aspects about chem.. Lab how we can improve them 5) any other comments We expect an evaluation from everyone. If you prefer not to put your name on this evaluation, thats k. Lab Instructions: Objectives: 1. To determine the boiling point of a liquid, and 2. To determine the melting point of a solid. Materials Used: Matches Spoilsport (Rubbing) Alcohol 1-2 small rubber bands Thermometer Powdered stand beaker 2 closed-end capillary tubes (melting point tubes) 10-12 mm diameter test tube Heat source Discussion and Review: In this experiment we will examine additional physical properties of liquids and solids. Two of the more important physical properties of pure substances are the boiling point and the melting point. The boiling point of a liquid is the temperature at which that liquid is converted to a gaseous state. Boiling point is formally defined as the temperature at which the vapor pressure of the liquid becomes equal to the pressure at the surface of the liquid. The boiling point of. A liquid can change if the pressure at the liquids surface changes. Since pure substances have a distinct boiling point, boiling points are sometimes used to determine the purity of substances. The melting point is the temperature at which a solid is converted to liquid. This is an important property of solids. We will write a custom essay sample on Lab Report Boiling Point and Melting Point specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Lab Report Boiling Point and Melting Point specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Lab Report Boiling Point and Melting Point specifically for you FOR ONLY $16.38 $13.9/page Hire Writer The melting point of solids, like the boiling point of liquids, is often used for the identification of substances. Boiling points and melting points are recorded in the Handbook of Chemistry and Physics, and can be found in the sections titled Physical Constants of Organic Compounds and Physical Constants of Inorganic Compounds. PROCEDURES: I. Boiling Point 1 . Make a test tube assembly by using the following directions and illustration. A. Place about 1 ml of Spoilsport alcohol in a 10-12 mm diameter test tube. B. Using a small rubber band, attach a thermometer to the outside of the test tube. The thermometer bulb should be even with the test tubes bottom. C. Insert an inverted closed end capillary tube into the test tube. . Make a water bath assembly by using the following directions and illustration. A. Half fill a 100 ml or larger beaker with warm tap water. [Note: a water bath is used if the boiling point of the material is expected to be less than the boiling point of water; otherwise, an oil bath is needed. ] b. Place the above test tube assembly in the water bath so that the surface level of the alcohol in the test tube is beneath the surface level of the water bath. . Place the beaker on the wire stand and, stirring frequently to insure even heating, carefully heat the water bath with your heat source until the water bath oils and a rapid stream of bubbles continuously emerges from the capillary tube. [Note: if an oil bath is used, the oil does not boil; the stream of bubbles from the capillary tube is the sole indicator that the liquid in the pipette or test tube is boiling. ] d. Remove the heat source and begin observing the stream of bubbles. E. When the last bubble emerges from the capillary tube, record the temperature. 3. Reheat the water bath and repeat the cooling process two more times. Record the temperature reading after each trial, and average all three trials. 4. The published boiling point of spoilsport alcohol is 82. Co. 5. Calculate the error between the observed boiling point and the published value of the boiling point. II. Melting Point 1 . A. Push the open end of a capillary tube into the powdered academic. B. Move the powder to the closed end of the capillary tube by tapping it on the table. Repeat until the the powdered academic occupies 1-2 mm of the capillary tube end. C. With rubber bands, attach the capillary tube to a thermometer and align the bulb of the thermometer with the closed end of the capillary tube. D. Make a water bath as before by half filling a 100 ml beaker with warm tap water. E. Place the thermometer/capillary tube assembly in the water bath so that the surface level of the powdered academic is beneath the surface level of the water bath. F. Place the beaker on the burner stand and, stirring frequently to insure even heating, carefully heat the water bath with your heat source. G. Note the temperature at which the academic melts. Remove heat source. . Let the academic cool and recitalist. Repeat the procedure two more times and average the results. i. The published melting of academic is ICC. Compare your experimental result with the accepted (published) value. . Calculate the percent error. Clean-up: Dispose of the used capillary tubes by putting them in your trash can. If any spoilsport alcohol is left in your test tube, you may p our it down the drain with All contents copyrighted (c) 1 998 Peter Scoffing, Ph. D. , Professor of Science, Colorado Mountain College All Rights reserved Experiment 10 As described in the lab manual: 1. Record the barometric pressure. 2. Measure about 10 Goff ice using the chemical balance and place it into a 100 ml beaker. Heat over a flame until half of the ice has melted. Remove from heat and measure the temperature s accurately as possible using your laboratory thermometer. Repeat with a 10. 0 g sample of your unknown. Be sure to record your unknown number. 3. Measure 50 ml of water using your graduated cylinder and pour it into a 200 ml beaker. Bring the liquid to a boil over a flame. After the liquid has been boiling for approximately 1-2 minutes, measure the temperature of the boiling liquid. Repeat with a 10 g sample of your unknown. Record all data in your lab notebook and clean up. We followed all the steps above pretty much closely and pretty much got the results for water that we expected, except that the ductwork had cheap thermometers because one of them broke (this was my lab partners fault she used it as a stirring rod which is exactly what you said not to do in your lecture) and the new one was off by a few degrees but it was close enough for this simple experiment. The pressure in the room was 761. 2 and the temperatures we measured for our unknown were: -15 and 17. Correcting for our water results this made our measurements -15. 2 and 17. 4 after the corrections. Based on these temperatures and the data we looked up in the library, our unknown was certainly blabber gas. The error in our results as really small and the experiment worked really good. Other errors include: possible math errors in our calculations and human error. Overall the lab was really good and we learned quite a lot of stuff. Especially liked the part where the blabber gas exploded when heated scaring my partner (I think that may be why she broke the thermometer). The only criticism of the lab is that the equipotent wasnt really great and that we ran out of time but otherwise it was a really good experience and I think it taught us a lot of chemistry. Notes: For references we used our textbook, lab manual, and the Chemical Handbook mound on shelf 2 of the library (behind the reference desk). What to do? A. Student Chemistry 1 Identification of a Compound using Melting and Boiling Points Introduction One of the primary methods used to characterize a new compound is the physical determination of its normal melting and boiling points. The normal melting and boiling point is the temperature at which a substance melts or boils when the barometric pressure is 760 mug or 1 ATM. In this experiment we will first calibrate our thermometers using ice and water, whose normal melting and boiling points are well characterized as 0. DC and 100. 0 ICC, respectively[l]. Following this, we will measure the normal melting and boiling points of an unknown compound. We will use this data to determine the identity of our unknown from a list of possible unknown samples and physical data from the Chemical Handbook[2]. Experimental Procedure As described in the lab manual,[3] ice was placed in a beaker and warmed until approximately 50% had melted. The temperature of the ice/water mixture was then measured with a thermometer. This was followed by a similar measurement of our solid unknown. In part II, water was heated until boiling and the enrapture of the liquid/gas mixture measured with a thermometer. This was followed by a similar measurement using our unknown compound. Toggle the best results possible, the procedure in the manual was modified by repeating each trial three times.