Don Delillos novel White noise Essay Example | Topics and Well Written Essays - 1250 words

Don Delillos novel White noise - Essay Example That is an ominous concern for Jack about his relationship with his loved wife Babette. The description the author uses for Jack's thought process on this question tells us how deeply he is in love with Babette. This love being so strong that it flares a selfish desire to rather have himself die first, rather than the other. His desire to be with and love Babbette is greater than the fear of his own death. "This question comes up from time to time, like where are the car keys. It ends a sentence, prolongs a glance between us. I wonder if the thought itself is part of the nature of physical love, or a reverse Darwinism that awards sadness and fear to the survivor."2 This thought is a selfish death desire, because Jack would rather Babbette to be left alone rather than himself if she were to die first. Of course Delillo makes certain the "white noise" plays its part and penetrates through everything by comparing the fleeting thought to missing car keys. At most times the characters are unconscious of the realities of life and death. But when inspected upon, uncomfortable consciousness of death develops like when you pay attention to the constant blinking of your own eye. The hum of the "white noise" has an anesthetic effect on the thoughts of death which is made possible by its power over the truth. Power and authority can be seen in the noise by Chapter six. The authority of the "white noise" is held on the highest pedestal by Heinrich the genius fourteen year old. "It's going to rain tonight." "It's raining now," I said. "The radio said tonight."3 The unquestioned power of the "white noise" can be seen again in chapter eight, as the character Steffie refuses to challenge its authority. "We have to boil our water," Steffie said. "Why" "It said on the radio." "They're always saying boil your water," Babette said.4 Not all the characters are wholly blinded by the white noise as we can tell from the rationalization from Jack and Babette both. "Just because it's on the radio doesn't meant we have to suspend beliefs in the evidence of our senses."5 The noise appears to take more control over the younger generations. The author described the difference in health and behaviors of people in the town broken down by age groups. One thing stimulated by the noise is the advertising of consumables in the supermarket. This is related to death in the obesity and other health complications over eating can cause. The family is aware that Babette purchases food from the supermarket only to never eat it. Even though she goes unconvinced of other aspects of the "white noise" just like Jack. In the area of purchasing groceries she is a knowing yet unhappily submissive to the authority of the noise, feeling guilty all through her relation ship with food. "She feels guilty if she doesn't buy it, she feels guilty when she sees it in the fridge, she feels guilty when she throws it away."6 The supermarket in particular is a hot bed of "white noise" life. I must use the word "life" to describe the "white noise" because Delillo hinted at the noise being a

Making Connections Coursework Example | Topics and Well Written Essays - 250 words

Making Connections - Coursework Example Therefore, all these systems have to work harmoniously to improve survival of the human being since if one fails, one is likely to lose his or her life. For instance, in case the heart failed, the other two systems will be affected tremendously. The human body will sense the inadequacy in blood supply to other parts of the body and try to compensate. This, in the long run, will lead to an increased rate of breathing and clogging of blood in the vessels and other body organs. This is so because the human body entirely depends on oxygen for respiration. Hence the lack of oxygen which has been cut off due to inadequate blood supply, affects the normal metabolism rate. As a result, there is increased rate of breathing which is a corrective measure trying to restore oxygen availability in the human body. Furthermore, in case there are severe cases, that can be the status of the blood in other parts of the body leading to the formation of thrombus that dislodge and affect the healthy blood supply or respiration

Research Achievements in Biomedical Engineering

Research Achievements in Biomedical Engineering BIOMEDICAL ENGINNERING Biomedical Engineering is a branch of engineering which combines biology and medicine with engineering principles and mechanics for the enhancement of advanced health care treatment and numerous breakthroughs in medicine. Bioengineer is a cross-disciplinary field which requires skills and knowledge to understand, define and solve biomedical and clinical problems through engineering sciences. Biomedical Engineers works on various sector within bioengineering i.e. tissue engineering, genetic engineering, imaging, biomaterials and a lot more. Bioengineers design and develop new equipment and methods, surgical devices, prosthetics and artificial organs for medical imaging, monitoring and diagnosing disease. They also work for the development of new medical procedures and research solutions. Bioengineering has become a promising and developing field in present times. Among various inventions of biomedical engineering, a cochlear implant is one of the important medical discovery. A cochlear implant is a surgically implanted medical device which replaces the function of a damaged inner ear by bypassing the damaged hair cells of a cochlea to provide signals to the brain. It works more than a hearing aid device. It is basically used by the people who have hearing loss in both ears and those who are not benefitted by hearing aids. The implant has been used by enormous population having hearing loss and difficulties because of its immense effectiveness. And as of December, 2012, approximately 324,200 registered devices have been implanted worldwide. Figure: Cochlear Implant (https://www.google.com/url?sa=irct=jq=esrc=ssource=imagescd=cad=rjauact=8ved=0ahUKEwiNqNuKhqrSAhWBPCYKHUGND3IQjRwIBwurl=http%3A%2F%2Fwww.medindia.net%2Fpatients%2Fpatientinfo%2Fcochlearimplants.htmpsig=AFQjCNHJBWApt8n01ZcD9A0LCeka2nVq7Aust=1488070699063874) Another Significant achievement in Biomedical engineering is Composite tissue transplantation. There has been a lot of interest in the development of bioengineered structures with multiple tissue types because of the recent success of clinical Vascularized Composite Allografts (VCAs) including the face (upper, lower) and abdominal walls. The tissue transplantation serves as a replacement of traumatic losses from explosives, burns, cosmetic concerns and various major functional injuries. Since VCA depends upon the growth of recipients nerves into the grafted donor tissue, many difficulties have been arising for achieving the cooperation of different tissue in vivo. Further research is going on to meet the challenges and difficulties. The field of biomedical engineering is expanding with successful experiments and surgeries. However, there are certain experimental and surgical failures as well. In one of the cases, one of the Duke university Hospital surgeon operated a heart and lung transplantation surgery of Jessica Santilan on February 7, without recalling the information of the donors blood type. There was absence of positive confirmation of ABO compatibility of the donor organs and the identified recipient patient. This was considered a critical mistake as it caused Ms. Santilan desperately ill with signs of irreversible brain damage. Biomedical Engineering is one of the most promising career. One must complete a four years Bachelors degree and a two years master degree in Biomedical Engineering major to become a professional Biomedical Engineer. An average salary of a Biomedical Engineer is $86,220 per annum. Being a Biomedical engineer, one can work for the betterment of health, society and can achieve a standard professional and financial living. REFERENCES Â   Â   Mattsson, J., Ringden, O., Storb, R. (2008, Januaary). Graft Failure Allogenic Hematopoietic Cell Transplantation. Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2344125/ Ericson, G. (2016, January 13). One-sided hearing, cochlear implants studied in project. Retrieved from: https://source.wustl.edu/2008/09/onesided-hearing-cochlear-implants-studied-in-project/

The importance of Effective Communication in Health-Care Essay

Language barriers have been one of the identified causes of many health problems, including timely and appropriate care, exacerbating existing conditions, and precipitating new ones. In addition to culturally appropriate education, interpreting is one of the approaches commonly used to help bridge the language gap for patients and practitioners. Interpreters are bilingual individuals that provide simultaneous interpretation between patients and medical care providers who do not share a common language (Finke, Light, & Kitko, 2008). This finding suggests that a good relationship is essential for high-quality patient care. (Finke et al., 2008) use qualitative evidence from interviews with medical interpreters, and argue that an interdisciplinary team is oriented in just one direction to care for patients, and bring them to their ultimate level of functioning. Certainly, all of the observations provided by this journal reaffirmed how understanding the basic principles of communicati on should be a paramount skill of any nurse. However, many barriers can disrupt therapeutic communication, and comprehensive assessment is necessary in order to determine the culture, religion, education background, and socioeconomic status of the patient (Finke et al., 2008) Patient centered communication empower nurses with the necessary skills to identify what patients are experiencing and place them in a better position to be empathetic. Meanwhile, creating a better health care experience for the patient and a more gratifying and meaningful career for the nurse (Finke et al., 2008). It is also more likely to effectively encourage patients to be active partners in planning and managing their own care. It is significant for medical care provider... ...5. LaValley, D (2008) Physician- Nurse Collaboration and patient safety. Crico RMF Vol. 26/No. 2 Lee Flicek Cassandra (2012) Communication: A Dynamic Between Nurses and Physicians. Vol. 21/No. 6 McCaffrey, R.G., Hayes, R., Stuart, W., Cassell, A., Farrell, C. & Miller-Reyes C. 2010. A Program to Improve Communication and Collaboration Between Nurses and Medical Residents. The Journal of Continuing Education in Nursing  · Vol 41, No 4. Retrieve from: http://content2.learntoday.info/ Patak, L., Wilson-Stronks, A., Costello, J., Keleinpell, R. M., Henneman, E. A., Pearson, C. & Happ, M. B. (2009). Improving Patient-Provider Communication. A Call to Action. Volume 39, Number 9, pp 372-376. Williams, M. V., Davis, T., Parker, R. M., & Weiss, B. D. (2002). The role of health literacy in patient-physician communication. FAMILY MEDICINE-KANSAS CITY-, 34(5), 383-389.

The Changing Role and Status of women in Britain since 1900 – source related study

1. Source A is useful as it shows how united the Suffragettes were in 1908. It says in the caption beneath the photograph, that there was said to have been 200000 people who attended. They look like they are determined to get what they want. Some of the women are holding banners, flowers and flags. There is a policeman in the corner of the picture. This shows that the police thought that the protest might become violent. The Suffragettes were known for heckling at meetings, deliberately trying to get arrested and get sent to prison, and in 1908 they began to attack properties. The Suffragettes believed that peaceful campaigns were getting them nowhere. In 1908, women had already achieved many improvements in their education, legal rights and job opportunities. However they still wanted to earn the right to be able to vote in General Elections. This may be what the protest was for. The Suffragettes had a lot of support, particularly in London. There were thirty-four branches of the WSPU in London alone and fifty-four branches in the rest of the country. Source A shows that the Suffragettes are like a big team and family. They all look determined to get what they want. The WSPU's motto was ‘Deeds not Words,' this meant that they believed that actions were stronger than words. Emmeline Pankhurst is leading the protest. In the Suffragettes first public demonstration in 1905 Emmeline said, â€Å"Then amid uproar and shouting, the women were seized and flung out of the hall.† In conclusion this source shows that the Suffragettes were a strong group of women who had strong opinions and views. This source shows that the Suffragette movement was a strong force to be reckoned with thus affecting people's attitudes. There would be those people in full support, with many women openly and many offering passive support. Men's attitudes would be very different. Up until now the women's place was in the home. The police's attitude was one of recognition of their considerable power and they feared the implications of this, thus the police presence in Source A suggests the need for containment and prevention of violence. 2. Source D and E are both extremely useful in showing us what peoples views about the Suffragettes were in 1910. Source D is taken from a British newspaper, and is obviously written by a man. It is reliable to show the some peoples opinions of what the Suffragettes were doing at the time. Source E is also useful as it is a postcard that was issued by the Suffragettes. It shows the suffragettes opinion. The postcard would be used to persuade people to become one of them. It shows what women could be a mayor or a nurse, and can't vote however men could be lunatics or drunkards and they can vote. This is biased as it has been created by the suffragettes, and is very one sided. However Source D is also biased as it doesn't show the views of the suffragettes, only the writers view about what went on. In Source D the writer uses phrases such as ‘shameful recklessness' and ‘desperate women' to show how the country should be ashamed of the way the suffragettes have acted. This newspaper article does not once say why the suffragettes were doing what they were doing. I'm sure many people agreed with what was written however I am also sure a lot of people were against what was written. In the headline it says ‘ DISGRACEFUL SCENES Reckless Women Charge Headlong into Cordon of Police.' The word ‘disgraceful' suggests that the country should be ashamed of the actions of the Suffragettes. Men expected women to be quiet and obedient so when women started to rebel against this stereotype, the campaign for women's votes was important news, especially with the papers. The Suffragettes began to create posters, which got them some sympathy from people in the public. In Source E it says ‘What a woman may be and yet not have the Vote.' Underneath, it has pictures of women being a mayor, a nurse, a doctor, teacher and a factory hand. It also says ‘what a man may have been and yet not lose the vote.' Underneath, it has pictures of men being a convict, a lunatic, an owner of white slaves, being unfit for service and a drunkard. Of course, women could also be all of the things the males are, and the males are able to have all of the livings the females have however in this postcard the women have only been shown as being good things, whereas the men have been shown as being bad. This would have got the suffragettes some more support. In conclusion I believe that both sources are equally reliable. They both are biased and they both show different opinions of different people at the time. 3. When the First World War began so many men had gone away to fight, that women were needed to do their jobs. This meant that the number of women working in industry increased massively. The war made it acceptable for women to work in shipyards, collieries and brickyards. Some of them worked as highly skilled engineers and carpenters. In some of these jobs, women were welcomed, however in others they were resented because they had little or no training for jobs, which had previously needed very skilled people. If there was an election during the war most soldiers wouldn't be able to vote. Women soon realised that this could be their chance to pressurize the government to let them vote. There were no demonstrations, however there were many meetings between women's leaders and politicians and telegrams and letters were sent to MPs. In 1918 Parliament passed a new law, which allowed women over the age of 30 to be able to vote. From my knowledge of what happened, I believe that the war was a big part of Parliament passing a law allowing women to vote. As there may not of been enough males in the country at the time of the war, to vote if there was an election, they needed females. I also think that because most men were away during the war, the women proved themselves to be useful, as they started doing work in factories and so on. Men had never seen females do this before so it may have been a shock to them to see that women could do things just as good as them. In Source J, Herbert Asquith says, â€Å"I will find it impossible to withhold from women the power and the right of making their voices heard.† This proves that women proved themselves by working while the men were away at war. They even convinced an ex prime minister that they were worthy of having a say about what goes on in there life. The war didn't help the French Suffragette women gain the vote. In conclusion I do agree with the statement: â€Å"Without the First World War British women would not have gained the right to vote in 1918.† I also believe that women would not have received as much respect from men as they do today if the war hadn't of happened. Women had a chance to prove to people that they were able to do things just as well as men in this period of time.

Liquid Chromatography

9. 1 Orbitals and Theories of Chemical Bonding 1. Which one of the statements concerning valence bond (VB) and molecular orbital (MO) bond theories is correct? a) MO theory predicts that electrons are localized between pairs of atoms. b) In VB theory, bonding electrons are delocalized over the molecule. c) MO theory accurately describes bonding in O2 and NO, VB theory does not. d) VB theory can describe molecular bonding in excited states. e) MO theory is used to accurately predict the colors of compounds. Answer: c 9. 2 Valence Bond Theory 2. Which of the following statements is/are CORRECT? . The overlap between an s orbital and a p orbital is called a pi-bond. 2. The overlap of two s orbitals in H2 is called a sigma bond. 3. HF is formed from the overlap of a hydrogen 1s orbital with a fluorine 2s orbital. a) 1 onlyb) 2 onlyc) 3 onlyd) 2 and 3e) 1, 2, and 3 Answer: b 3. Which of the following statements concerning hybrid orbitals is/are CORRECT? 1. The number of hybrid orbitals eq uals the number of atomic orbitals that are used to create the hybrids. 2. When atomic orbitals are hybridized, the s orbital and at least one p orbital are always hybridized. 3. To create octahedral structures, two d orbitals must be hybridized along with the s and all three p orbitals. a) 1 onlyb) 2 onlyc) 3 onlyd) 2 and 3e) 1, 2, and 3 Answer: e 4. How many sigma (? ) bonds and pi (? ) bonds are in ethene, C2H4? a) four ? , one ? b) four ? , two ? c) five ? , one ? d) five ? , two ? e) six ? , zero ? Answer: c 5. How many sigma (? ) bonds and pi (? ) bonds are in carbon monoxide? a) three ? , zero ? b) two ? , one ? c) two ? , two ? d) one ? , two ? e) zero ? , three ? Answer: d 6. How many sigma (? ) bonds and pi (? ) bonds are in the following molecule? a) seven ? nd three ? b) seven ? and two ? c) five ? and five ? d) five ? and three ? e) five ? and two ? Answer: a 7. To form a molecule with a trigonal bipyramidal electron geometry, what set of pure atomic orbitals must be mixed? a) one s and three p b) one s, three p, and one d c) one s, three p, and two d d) two s, six p, and two d e) two s, six p, and four d Answer: b 8. What is the maximum number o f hybridized orbitals formed by a fluorine atom? a) 1b) 2c) 3d) 4e) 6 Answer: d 9. What is the hybridization of either carbon atom in acetylene, C2H2? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: a 10. What is the hybridization of the nitrogen atom in NCl3? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: c 11. What is the hybridization of the xenon atom in XeF2? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: d 12. What is the hybridization of the central nitrogen atom in nitrite ion, NO2-? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: b 13. What is the hybridization of the chlorine atom in chlorite ion, ClO2-? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: c 14. What is the hybridization of the central atom in a molecule with a square-planar molecular geometry? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: e 15. What is the hybridization of each carbon atom in benzene, C6H6? Benzene contains a six-member carbon ring. a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: b 16. For which of the following molecules does the central carbon atom have sp2 hybridization? a) Cl2COb) CHCl3c) CS2d) CH2Cl2e) HCN Answer: a 17. For which of the following molecules and ions does the central nitrogen atom have sp3 hybridization? a) NO2-b) HNO3c) NOBrd) NBr3e) HNO2 Answer: d 18. For which of the following molecules and ions does the central atom have sp hybridization: NO2+, O3, and I3-? a) NO2+ onlyb) O3 onlyc) I3- onlyd) O3 and I3-e) I3- and NO2+ Answer: a 9. What is the molecular geometry around a central atom that is sp3 hybridized and has two lone pairs of electrons? a) bent b) linear c) trigonal-planar d) trigonal-pyramidal e) trigonal-bipyramidal Answer: a 20. What is the molecular geometry around a central atom that is sp3d2 hybridized and has one lone pair of electrons? a) tetrahedral b) trigonal-bipyramidal c) square-planar d) square-pyramidal e) see-saw Answer: d 21. What is the molecular geometry around a central atom that is sp2 hybridized, has three sigma bonds, and one pi bond? a) trigonal-planar b) trigonal-pyramidal c) bent d) T-shaped e) tetrahedral Answer: a 2. What is the molecular geometry around a central atom that is sp3d hybridized and has one lone pair of eletrons? a) trigonal bipyramidal b) trigonal-pyramidal c) see-saw d) tetrahedral e) square-planar Answer: c 23. What is the hybridization of a central atom that has four sigma bonds and has no lone pairs of electrons? a) spb) sp2c) sp3d) sp3de) sp3d2 Answer: c 24. Upon heating, CaCO3 decomposes to CaO and CO2. What change in the hybridization of carbon occurs in this reaction? a) sp to sp2b) sp2 to sp3c) sp3 to spd) sp2 to spe) no change Answer: d 25. One product of the combustion of ethane, C2H6, is carbon dioxide. What change in hybridization of the carbon occurs in this reaction? a) sp3 to sp2b) sp3 to spc) sp2 to sp3d) sp2 to sp3d2e) sp2 to sp Answer: b 26. Nitric acid, HNO3, dissociates in water to form nitrate ions and hydronium ions. What change in hybridization of the nitrogen atom occurs in this dissociation? a) sp2 to sp3b) sp2 to spc) sp3 to spd) sp to sp3e) no change Answer: e 27. Which of the following hybridized atoms is not possible? a) an sp hybridized carbon atom b) an sp2 hybridized sulfur atom c) an sp3 hybridized phosphorus atom d) an sp3d hybridized oxygen atom e) an sp3d2 hybridized xenon atom Answer: d 8. Which of the following characteristics apply to SO2? 1. polar bonds 2. nonpolar molecule 3. linear molecular shape 4. sp hybridized a) 1 onlyb) 1 and 2c) 3 and 4d) 1, 2, and 3e) 1, 2, 3, and 4 Answer: a 29. Dichloromethane, CH2Cl2, is a common organic solvent. Which of the following statements concerning dichloromethane is/are CORRECT? 1. CH2Cl2 has two isomers. For one i somer of CH2Cl2, the chlorine atoms are adjacent to each other and the molecule is polar. 2. CH2Cl2 has two isomers. For one isomer of CH2Cl2, the chlorine atoms are on opposites sides of the carbon atom and the molecule is nonpolar. 3. The hybridization of the central carbon atom is sp3. a) 1 onlyb) 2 onlyc) 3 onlyd) 1 and 2e) 1, 2, and 3 Answer: c 30. For which of the following compounds is it possible for cis and trans isomers to exist? a) 1 onlyb) 2 onlyc) 3 only d) 1 and 2e) 1, 2, and 3 Answer: b 31. Which of the underlined atoms (C1, C2, N, and O) are sp2 hybridized? a) C1 and C2 b) C1, N, and O c) N and O d) O and C2 e) O only Answer: a 9. 3 Molecular Orbital Theory 32. All of the following statements concerning molecular orbital (MO) theory are correct EXCEPT a) the Pauli exclusion principle is obeyed. b) Hund’s rule is obeyed. ) electrons are assigned to orbitals of successively higher energy. d) a bonding molecular orbital is lower in energy than its parent atomic orbitals. e) the combination of two atomic orbitals creates only one molecular orbital. Answer: e 33. Atomic orbitals combine most effectively to form molecular orbitals when a) electrons in the orbitals have no spins. b) electrons in the orbitals have the same spin. c) the atomic orbitals are hybridized. d) the atomic orbitals have similar energies. e) p-orbitals are half-filled. Answer: d 34. A molecular orbital that decreases the electron density between two nuclei is said to be ________. ) hybridizedb) bondingc) antibondingd) pi-bondinge) nonpolar Answer: c The following molecular orbital diagram may be used for problems 35-48. For oxygen and fluorine, the ? 2p orbital should be lower in energy than the ? 2p. However, the diagram will still yield correct bond order and magnetic behavior for these molecules. |Energy | |________ |? *2p | | | | | | |________ | |________ |? 2p | | | | | | | |________ |? 2p | | | | | | |________ | |________ |? 2p | | | | | | | |________ |? 2s | | | | | | | |________ |? 2s | | | | | | | |________ |? *1s | | | | | | | |________ |? s | 35. According to molecular orbital theory, which of the following species is the most likely to exist? a) H22-b) He2c) Li22-d) Be2e) Be22- Answer: e 36. A ccording to molecular orbital theory, which of the following species is least likely to exist? a) Be2b) F22+c) C22-d) Li2e) B22- Answer: a 37. According to molecular orbital theory, which of the following species has the highest bond order? a) F2b) F22+c) C22-d) Li2e) B22+ Answer: c 38. According to molecular orbital theory, what is the bond order of oxygen, O2? a) 1b) 3/2c) 2d) 5/2e) 3 Answer: c 39. According to molecular orbital theory, what is the bond order of N2-? a) 1b) 3/2c) 2d) 5/2e) 3 Answer: d 40. According to molecular orbital theory, which of the following lists ranks the oxygen species in terms of increasing bond order? a) O22+ < O22- < O2 b) O22- < O2 < O22+ c) O2 < O22+ < O22- d) O2 < O22- < O22+ e) O22+ < O2 < O22- Answer: b 41. Consider the molecules B2, C2, N2 and O2. Which two molecules have the same bond order? a) B2 and C2b) B2 and O2c) C2 and N2d) C2 and O2e) N2 and O2 Answer: d 42. Use molecular orbital theory to predict which species is paramagnetic. ) N2b) O2c) F2d) Li2e) H2 Answer: b 43. Use molecular orbital theory to predict which ion is paramagnetic. a) F22+b) O22-c) O22+d) N22+e) B22- Answer: a 44. What is the molecular orbital configuration of F2? a) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)2 (? *2p)2 b) [core electrons] (? 2s)2 (? *2s)2 (? 2p)2 (? 2p)2 (? *2p)2 c) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? *2p)4 d) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)2 (? *2p)6 e) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)2 (? *2p)4 Answer: e 45. What is the molecular orbital configuration of N22+? a) [core electrons] (? s)2 (? *2s)2 (? 2p)4 (? 2p)2 (? *2p)2 b) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 c) [core electrons] (? 2s)2 (? *2s)2 (? 2p)2 (? 2p)2 d) [core electrons] (? 2s)4 (? *2s)4 e) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)2(? *2p)4 Answer: b 46. Assume that the molecular orbital energy diagram for a homonuclear diatomic molecule applies to a heteronuclear diatomic molecule. What is the molecular orbital configuration of NO? a) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)2 (? *2p)1 b) [core electrons] (? 2s)2 (? *2s)2 (? 2p)2 (? 2p)2 (? *2p)2 c) [core electrons] (? 2s)2 (? 2s)2 (? 2p)2 (? 2p)3 d) [core electrons] (? 2s)2 (? *2s)2 (? 2p)4 (? 2p)1 e) [core electrons] (? 2s)2 (? *2s)2 (? 2p)2 Answer: a 47. Assuming that the molecular orbital energy diagram for a homonuclear diatomic molecule appli es to a heteronuclear diatomic molecule, determine which of the following species has the highest bond order. a) NO-b) OF-c) CN-d) O2e) NO Answer: c 48. Assuming that the molecular orbital energy diagram for a homonuclear diatomic molecule applies to a heteronuclear diatomic molecule, determine which of the following species is paramagnetic. a) NO+b) COc) CN-d) OF-e) NO Answer: e 49. Which molecule will have the following valence molecular orbital level energy diagram? |? *2p | | | | |? *2p | | | | |? 2p | |[pic] | | |? 2p |[pic] | |[pic] | |? *2s | |[pic] | | |? 2s | |[pic][pic] | | a) Li2b) Be2c) B2d) C2e) N2 Answer: e 50. The following valence molecular orbital energy level diagram is appropriate for which one of the listed species? |? 2p | | | | |? *2p |[pic] | |[pic] | |? 2p | |[pic] | | |? 2p |[pic] | |[pic] | |? *2s | |[pic] | | |? 2s | |[pic][pic] | | a) B22-b) C22-c) N22-d) O22-e) F22- Answer: c 51. Which molecule will have the following valence molecular orbital energy level diagram? |? *2p | | | | |? *2p | | | | |? 2p | | | | ? 2p |[pic] | |[pic] | |? *2s | |[pic] | | |? 2s | |[pic][pic] | | a) Li2b) Be2c) B2d) C2e) F2 Answer: d 52. In the NO2- ion, each atom can be viewed as sp2 hybridized. Thus, each atom has one remaining unhybridized p orbital. How many ? 2p molecular orbitals (including both bonding and antibonding orbitals) are form ed using the unhybridized p orbitals? a) 1b) 3c) 4d) 6e) 12 Answer: b 53. Benzene, C6H6, consists of a six member ring of sp2 hybridized carbon atoms. Each carbon atom has one unhybridized p orbital. How many ? p bonding, antibonding, and nonbonding molecular orbitals exist for benzene? a) Three ? 2p molecular orbitals exist; two bonding and one antibonding. b) Three ? 2p molecular orbitals exist; one bonding, one antibonding, and one nonbonding. c) Six ? 2p molecular orbitals exist; three bonding and three antibonding. d) Six ? 2p molecular orbitals exist; two bonding, two nonbonding, and two antibonding. e) Twelve ? 2p molecular orbitals exist; six bonding and six antibonding. Answer: c Short Answer Questions 54. Which theory, valence bond or molecule orbital, correctly predicts the existence of paramagnetic molecules? Answer: molecular orbital theory 55. In valence bond theory, each sigma bond in CH4 is formed from the overlap of a hydrogen atom’s 1s orbital with a ____ hybridized orbital on the carbon atom. Answer: sp3 56. In molecular orbital theory, the bond order is defined as 1/2(the number of electrons in ________ orbitals minus the number of electrons in antibonding orbitals). Answer: bonding 57. Triiodide ion, I3-, has a trigonal-bipyramidal electron-pair geometry and a linear molecular geometry. The hybridization of the central iodine atom is ________. Answer: sp3d 58. The hybridization of the xenon atom in XeOF4 is ________. Answer: sp3d2 59. Draw a Lewis structure of xenon trioxide. What is the hybridization of the xenon atom in this molecule? Answer: The hybridization is sp3. 60. Draw the valence molecular orbital energy level diagram for nitrogen monoxide, NO. |? *2p | |[pic] | | |? *2p | | | | |? 2p | |[pic] | | |? 2p |[pic] | |[pic] | |? *2s | |[pic] | | |? 2s | |[pic][pic] | | Answer: ———————– [pic] [pic] [pic] [pic]

Edgar Allan Poe Essays (4642 words) - Free Essays, Term Papers

Edgar Allan Poe Essays (4642 words) - Free Essays, Term Papers Edgar Allan Poe Edgar Allan Poe, znakomity amerykaski pisarz, krytyk literacki i poeta, urodzi si 19 stycznia 1809r. w Bostonie, w biednej rodzinie aktorskiej. Od samego pocztku chopca przeladowa pech, bowiem w niedugim czasie po jego narodzinach odszed ojciec David, a nastpnie, w grudniu 1811r, zmara jego matka, Elizabeth Arnold Poe. Osierocone dzieci pastwa Poe trafiy do rodzin zastpczych w Richmond. Modsza siostra Edgara, Rosalie zamieszkaa u pastwa MacKenzie, natomiast malutkim Edgarem zaopiekowao si bezdzietne maestwo, John i Frances Allanowie. Poe mia jeszcze starszego brata o imieniu Henry, ktry jednak ju za ycia rodzicw zosta oddany pod opiek dziadkw w Baltimore. Allanowie nigdy formalnie nie zaadoptowali Edgara aczkolwiek chopiec zwraca si do nich "mamo" i "tato". Swoje drugie imi, Allan, "odziedziczy" wanie po przybranych rodzicach. Rodzina Allanw utrzymywaa si z handlu tytoniem. W nowym domu, Edgar mia wygody o jakich nie mg marzy za ycia rodzicw. Chopiec nie czu si jednak tam szczliwy, nie potrafic nawiza uczuciowej wizi z ojczymem. Ucieka w wiat wyobrani, ju wtedy prbujc pisa poezj i proz. Jednoczenie zainteresowa si wiedz okultystyczn, co miao pozostawi lad w caej jego twrczoci. W latach 1815-1820 przyszy poeta przebywa z przybranymi rodzicami w Anglii, gdzie uczszcza do szkoy m. in. Mr. Bransby'ego, upamitnionej pniej w opowiadaniu William Wilson. Dalsz edukacj pobiera Poe w szkoach w Richmond i, ukoczywszy szko redni, 14 lutego 1826 r. podj studia na uniwersytecie stanu Virginia w Charlottesville, gdzie zabysn zdolnociami. Mia bardzo dobre wyniki w nauce, by take aktywnym czonkiem Jefferson Literary Society. Niestety chroniczny brak pienidzy skierowa go w stron hazardu przez co wpad w dugi i ju po roku zrezygnowa ze studiw. Przybrany ojciec Edgara nie aprobowa stylu ycia jaki w trakcie studiw prowadzi dorastajcy syn (a zwaszcza jego pocigu do alkoholu), w zwizku z czym czsto dochodzio midzy nimi do zatargw. Kiedy pewnego razu, po ostrej ktni, ojczym zdecydowa si nie przesya pienidzy, Poe postanowi rzuci uczelni i opuci dom rodzinny. Bez grosza przy duszy i z marzeniami o karierze pisarskiej wyjecha do Bostonu. W Bostonie ukaza si pierwszy tomik wierszy E. A. Poe Tamerlane and Other Poems (1827r.). Szczupe wydawnictwo nie spotkao si z zainteresowaniem na jakie liczy mody poeta jednak pozwolio mu na poprawienie swego wizerunku w oczach przybranych rodzicw. Rwnoczenie, z braku dostatecznych rodkw utrzymania, jako Edgar Allan Perry, Poe zacign si do wojska gdzie wytrzyma dwa lata. Dziki protekcji ojczyma udao mu si dosta do Akademii Wojskowej w West Point, lecz brak pienidzy spowodowa, e i tych studiw nie skoczy. W midzyczasie zmara macocha Edgara (John Allan w 1830r. oeni si ponownie). Konflikty z ojczymem narastay i po kolejnej ostrej sprzeczce, Poe zerwa ostatecznie kontakt z przybranym ojcem. Tym samym pozbawi si skromnej pensyjki, ktr ojczym przesya na czas nauki w West Point. Wyjecha do Baltimore, gdzie zamieszka ze swoj ciotk Mari Poe Clemm i jej dziemi: Virgini i Henrym. Opowiadania i wiersze, ktre w tym czasie pisa, nie znajdyway zainteresowania. Przekonany o ich wartoci, Poe opublikowa kolejne zbiory poezji: w 1829r. jako nowe, rozszerzone wydanie ukazao si Al Aaraaf, Tamerlane and Minor Poems a niedugo pniej Poems (1831). Jednak wydawnictwa te rwnie nie przyniosy mu oczekiwanego powodzenia. Jednoczenie prbowa swoich si take w prozie. Wanie tu, podczas pobytu u ciotki w Baltimore, Edgar zacz tworzy swoje pierwsze opowiadania. Bra udzia w konkursach literackich, pocztkowo bez wikszych sukcesw. Prbowa take znale prac w tamtejszej gazecie, niestety bezskutecznie. Tymczasem pomau rozkwitao uczucie Edgara do swojej modszej kuzynki, Virginii. Zdobycie w 1833r. pierwszej nagrody w konkursie literackim na opowiadanie MS. Found in a Bottle (Rkopis znaleziony w butli) zwrcio na poet uwag pisarza J. P. Kennedy'ego, ktry pomg mu w uzyskaniu dwa lata pniej posady redaktora pisma "Southern Literary Messenger" w Richmond. Mimo wielkich zdolnoci i niewtpliwych sukcesw poeta ustpi z tego stanowiska w 1837r. Jednak zanim zrezygnowa ze swojej pierwszej posady, 16 maja 1836r. Poe polubi sw niespena czternastoletni kuzynk Wirgini Clemm. Zapocztkowao to kilka szczliwych lat w jego yciu. Wraz z on i ciotk wyjecha do Nowego Yorku, gdzie w 1838 roku ukazaa si The Narrative of Arthur Gordon Pym (Opowie Artura Gordona Pyma z Nantucket), jego pierwsza i jedyna powie, a stamtd do Filadelfii (1839 - 1844). Przez ten czas wsppracowa z czasopismem E. Burtona "Gentelman's Magazine"(1839 - 1940) i "Graham's Magazine" (1841 - 1842). Niektre