Aspergers Syndrome Essay -- Disease/Disorders

Hans Asperger, a pediatrician from Austria, began to study a group of children at his clinic in 1944. He noticed that the young boys he was studying were clumsy, lacked social skills, and did not understand nonverbal communication. Asperger’s syndrome (AS), named after Doctor Hans Asperger, is a developmental disorder. Research by Woodbury-Smith and Volkmar (2009), claim that AS was originally thought of as a less severe form of Autism, in which the individual has higher linguistic ability but still lacks social skills. Many researches now consider AS an Autism Spectrum Disorder (ASD). However, it is disputed amongst researchers as to whether it is explicit from High Functioning Autism (HFA). Many characteristics of AS and HFA are overlapped, making it difficult to distinguish between one and the other (Woodbury-Smith and Volkmar, 20089, p. 2). In this paper, Asperger’s syndrome, as depicted in the film, â€Å"Adam†, will be evaluated. Asperger’s syndrome is defined as an ever-present neurodevelopmental disorder, in which social communication is affected and discernment and attentiveness may be bounded (Woodbury-Smith and Volkmar, 2009, p. 2). According to Baron-Cohen, Wheelwright, Robinson, & Woodbury-Smith (2005), Asperger’s syndrome can be characterized by various behavioral and social symptoms: lacking the ability to understand social cues; preoccupation with one or few interests; disliking change in routines; repetitive behavior; failure to understand emotional tones in speech; and a seeming lack of empathy. The title character in the film â€Å"Adam†, Adam Raki, is a 29-year-old man who has AS. At the beginning of the film, Adam is left alone for the first time after the death of his father. When Adam meets his new upstairs neig... ...Cited Baron-Cohen, S., Wheelwright, S., Robinson, J., & Woodbury-Smith, M. (2005). The Adult Asperger Assessment (AAA): A Diagnostic Method. Journal Of Autism & Developmental Disorders, 35(6), 807-819. Hurlbutt, K., & Chalmers, L. (2004). Employment and Adults with Asperger Syndrome. Focus On Autism & Other Developmental Disabilities, 19(4), 215-222. O'Connor, K. (2007). Brief Report: Impaired Identification of Discrepancies Between Expressive Faces and Voices in Adults with Asperger’s Syndrome. Journal Of Autism & Developmental Disorders, 37(10), 2008-2013. Rogers, K., Dziobek, I., Hassenstab, J., Wolf, O. T., & Convit, A. (2007). Who Cares? Revisiting Empathy in Asperger Syndrome. Journal Of Autism & Developmental Disorders, 37(4), 709-715. Woodbury-Smith, M. R., & Volkmar, F. R. (2009). Asperger syndrome. European Child & Adolescent Psychiatry,18(1), 2-11.

Salmeterol : The Optimization of an Asthmatic Drug :: Medical Biology Asthma Medicine

Salmeterol: The Optimization of an Asthmatic Drug Abstract: Asthma can be found in so many people all across world. Asthma is not biased; sex, race, or country does not matter. Asthma affects a large percent of the global population. Becoming aware of this is the first step. Now, using a drug in use, salmeterol, I want to optimize this drug to make it better by giving it different analogs, which will give it different properties. Using the latest technology in the Chemistry Lab, Gaussview and Gaussian 03W aided me in creating models for these analogs and optimizing them. 3 Imagine you are a cross country runner competing in the annual Mt. Sac Cross Country Invitational. The finish line is just ahead, and the crowd is going wild with excitement. The top runner is slightly ahead of you, and you decide to sprint the last fifty yards to the finish line, hopefully to attain first place. Nearing the finish line, you suddenly have trouble breathing, and your heartbeat becomes irregular. You quickly realize you are having an acute asthma attack and pull out your inhaler. With a deep breath and a small puff, you feel better. However, the time it took to complete the process cost you, and you will have to settle with second place. Better luck next time! Asthma is a growing chronic condition in America and has taken quite a toll on Americans. According to the American Academy of Allergy Asthma & Immunology (1), approximately twenty million Americans have asthma, half of which are specifically from allergic asthma. With so many people with the condition, it is no surprise that in 2001, a quarter of all Emergency Room visits were caused by asthma. As a result, health costs for asthma have soared and have hit ten billion dollars annually. Unfortunately, not every person has been able to survive the effects of asthma, and approximately five thousand deaths occur due to asthma yearly. Though the sole cause of asthma is unknown, there are several probable hypotheses as to why one would attain asthma (7). As a result, asthma awareness must be spread. Not only does a large part of the American population have this condition, but they also do not know how they got the condition. This has led me to create a goal: to optimize salmeterol, a drug used for asthma. However, many do not know what asthma is. 4 To fully grasp the concept of asthma, one must first analyze the system that it affects: the respiratory system, which controls the inhalation and exhalation of air. Following the pathway of air, it begins in the atmosphere and enters the body through

Managing Financial Principles and Techniques

Managing Financial Principles and Techniques Assignment 2 Part 1: Financial Appraisal techniques Part 2: Forecasting Part 1-Financial Appraisal Techniques Task 1. NET PRESENT VALUE (NPV) Year PROJECT X ? 000Project Y ? 000Discount FactorXY 0-200-200-200-200 1352180. 90931. 815198. 162 280100. 82666. 088. 26 390100. 75167. 597. 51 47540. 68351. 2252. 732 52030. 62112. 421. 863 229219 1)NET PRESENT VALUE (NPV) X= 229-200=29 Y=219-200=19 PAYBACK PERIOD: Cumulative Cash Flow Year PROJECT X ? 000Project Y ? 000XY -200-200-200-200 135218-165-18 28010-8528 39010538 47548042 520310045 10045 TASK 2: Net Present value The present value of an investments future net cash flows minus the initial investment. If positive, the investment should be considered (unless an even better investment exists), otherwise it should not. It is a calculation based on the idea that ? 1 received in ten years time is not worth as much as ? 1 received now because the ? 1 received now could be invested for those ten y ears and compound into a higher value. The NPV calculation establishes what the value of future earnings is in todays money. To do the calculation you apply a discount % rate to the future earnings. NPV is said to be short for net present value, it is the present value of net cash flows. It is commonly used for appraisals on projects. The advantage of using NPV is that it tells you if a project will add or deduct value from the business and hence decisions are taken of whether to accept it or reject it. Advantages: It will also give accurate position for commonly special projects. -It gives an absolute value. -NPV allow for the time value for the cash flows considers both magnitude and timing of cash flows †¢Consistent with shareholder wealth maximization: Added net present values generated by investments are represented in higher stock prices. †¢Indicates whether a proposed project will yield the investor’s required rate of return Disadvantages: †¢It is very difficult to identify the correct discoun t rate. Many people find it difficult to work with a dollar return rather than a percentage return because it is hard to directly compare projects unlike say a percentage return as calculated using IRR †¢It needs to be interpreted carefully because the overall NPV reflects the scale of the project as well as the rate of return. IRR Like the NPV method used for capital budgeting, the IRR method also uses cash flows and recognizes the time value of money. NPV and IRR may give conflicting decisions where projects differ in their scale of investment. Advantages IRR allows you to compare projects easily because it is a percentage †¢Also it can direct attention to situations where it might be better to do multiple versions of the same project with a high IRR †¢In calculating IRR it can give an indication of how sensitive the Net Present Value is to changes in discount rate †¢Considers both the magnitude and the timing of cash flows Disadvantage †¢Multiple internal rates of return with unconventional cash flows †¢Any change in sign (+,-) in period cash flows produces as many IRR’s as there are changes in the cash flow directions of the investment, lending or borrowing. Assumes cash flow is reinvested at the IRR rate and this may not be a realistic assumption NPV and IRR compared NPV assumes that project cash flows are reinvested at the company's required rate of return; the IRR assumes that they are reinvested at the IRR. Since IRR is higher than the required rate of return, in order for the IRR to be accurate, the company would have to keep finding projects that would reinvest the cash flow at this higher rate. It would be difficult for a company to keep this up forever, thus NPV is more accurate. NPV method assumes that CFs are reinvested at the cost of capital K IRR method assumes that CFs are reinvested at IRR Can lead to conflicts in ranking of mutually exclusive projects Crossover NPV is superior to IRR when choosing among mutually exclusive investments Payback †¢Ignores the time value of money. This weakness is eliminated with the discounted payback method. Advantages †¢It is very simple †¢Helps prevent cash flow problems †¢Useful where technology changes rapidly or there are other sources of risk as it asks the question how quickly do we get the money back? Measure of risk and liquidity †¢Useful for evaluating small projects Disadvantages †¢Ignores the time value of money †¢Ignores cash flows after the payback period †¢Objective not consistent with shareholder wealth maximization rather it focuses on risk minimization ARR Advantages †¢It clearly shows profitability of a project †¢It allows easy comparison between project s †¢The opportunity cost of investment can be taken into account †¢It can be easily compared to the target return on long term capital employed which is calculated in the same way Disadvantages †¢More complex than pay back It does not take into account the effects of inflation on the value of money over a time period. ARR Advantages †¢It clearly shows profitability of a project †¢It allows easy comparison between projects †¢The opportunity cost of investment can be taken into account Disadvantages †¢More complex than pay back †¢It does not take into account the effects of inflation on the value of money over a time period. TASK 3 PUBLIC SECTOR PROJECTS: Cash In Flows TOIN8% Inflation AdjustmentInflation Adjustment Value T1250001. 0827000 T2250001. 1729250 T3250001. 2631500 T340001. 265040 Cash Out Flow OUT10% Inflation AdjustmentInflation Adjustment Value T01000010000 T11000018000 T1180001. 1020900 T2190001. 2122990 Net Inflation adjusted cash flows NPV INOUTNet Cash FlowNet Present Discount FactorDiscounted Cash Flow T0-1000010000110000 T12700010000170000. 8514450 T1-18000180000. 8515300 T2292502090083500. 726012 T3315002299085100. 615191. 1 T35040-50400. 613074. 4 PART 2-FORECASTING DIXON COMPANY Solution: NOVEMBERDECEMBERJANUARYFEBRUARYMARCHAPRILMAYJUNE Sales/Budgeted Sales Units (Given)10001200140016001800200022002600 Sales budgeted/ sales ? working note 1)50,00060,00070,00080,00090,000100,000110,000130,000 Budgeted Production (Given)12001400160020002400260024002200 Cost Budgeted Manufacturing Cost ? Material (working note 2)31,20036,40041,60052,00062,40067,60062,40057,200 Labour(working note 3)9,60011,20012,80016,00019,20020,80019,20017,600 Variable overheads (working note 4)2,4002,8003,2004,0004,8005,2004,8004,400 Fixed Overheads (Given)5,5005,5005,5005,5005,500 5,5005,5005,500 Total Production Cost (working note 5)48,70055,90063,10077,50091,90099,10091,90084,700 working note 1 Sales budgeted/ sales ? = Sales/Budgeted Sales Units x 50 working note 2 Material = Budgeted Production x 26 working note 3 Labour = Budgeted Production x 8 working note 4 Variable overheads = Budgeted Production x 2 working note 5 Total Production Cost = Material + Labour + Variable Overheads+ Fixed Overheads Work Out Cash Flow Forecast NovemeberDecemberJanuaryFebruaryMarchAprilMayJune Opening Balance35,500 Sales70,00080,00090,000100,000110,000130,000 Less: Material-41,600-52,000-62,400-67,600-62,400-57,200 Labour-12,800-16,000-19,200-20,800-19,200-17,600 Variable Overheads (50%)-6,400-8,000-9,600-10,400-9,600-8,800 Variable Overheads (50%)-6,400-8,000-9,600-10,400-9,600-8,800 Fixed Overheads-5,500-5,500-5,500-5,500-5,500-5,500 Machinery120034000 Closing Balance Task 2 Solution: NOVEMBERDECEMBERJANUARYFEBRUARYMARCHAPRILMAYJUNE Sales/Budgeted Sales Units (Given)10001200140016001800200022002600 Sales budgeted/ sales ? (working note 1)75,00090,000105,000120,000135,000150,000165,000195,000 Budgeted Production (Given)12001400160020002400260024002200 Cost Budgeted Manufacturing Cost ? Material (working note 2)31,20036,40041,60052,00062,40067,60062,40057,200 Labour(working note 3)9,60011,20012,80016,00019,20020,80019,20017,600 Variable overheads (working note 4)2,4002,8003,2004,0004,8005,2004,8004,400 Fixed Overheads (Given)5,5005,5005,5005,5005,5005,5005,5005,500 Total Production Cost (working note 5)48,70055,90063,10077,50091,90099,10091,90084,700 working note 1 Sales budgeted/ sales ? = Sales/Budgeted Sales Units x 75 working note 2 Material = Budgeted Production x 26 working note 3 Labour = Budgeted Production x 8 working note 4 Variable overheads = Budgeted Production x 2 working note 5 Total Production Cost = Material + Labour + Variable Overheads+ Fixed Overheads Work Out Cash Flow Forecast NovemeberDecemberJanuaryFebruaryMarchAprilMayJune Opening Balance35,500 Sales70,00080,00090,000100,000110,000130,000 Less: Material-41,600-52,000-62,400-67,600-62,400-57,200 Labour-12,800-16,000-19,200-20,800-19,200-17,600 Variable Overheads (50%)-6,400-8,000-9,600-10,400-9,600-8,800 Variable Overheads (50%)-6,400-8,000-9,600-10,400-9,600-8,800 Fixed Overheads-5,500-5,500-5,500-5,500-5,500-5,500 Machinery120034000 Closing Balance

Music Appreciation Essay

Question 4: Tchaikovsky’s 1812 Overture was a very interesting song; there were many changes through out the piece. It started out sounding like a battle symphony where Tchaikovsky used the instruments to make a choppy sound, which reminded me of a march, as well as gun sounds. He has a great use of crescendo at the beginning. Along with increasing the sound level he also increases the tempo and brings the piece into a dramatic point as all of the instruments join. This includes many different types of instruments: orchestra, woodwind, and percussion. This composer also has a great use of repetition, in the first minute of the song he repeats small sections with the same instrument, but as the song develops he makes this more complicated and repeats longer sections and changes instruments each time. I really like this style because it allows the listener to hear each instrument individually, which is rarely done in a song. Drums are used to keep the beat in this section of the piece, whic h makes the battle feeling stronger and alludes to a heartbeat sound. But it is really the trumpets that stand out in the song and give the beginning of the battle presentation. After the repetition involving different instruments the song begins a decrescendo, this is a great transition into the next big change in the music. A dramatic shift happens and the music turns into a soft, smooth melodic tune that you would dance to at a ball. There is the use of a tiny bell sound that lightens the mood. The notes in this section are much longer and smoother than previously. Also, the woodwinds were taken out during this section and we only hear orchestra. I did not particularly enjoy this song until it transitioned in such a dramatic way; I have never heard such a transition in a piece where it goes from a battle theme to a ball dance theme. This section is very relaxing when compared to the pervious part. We then  transition into the third section and the tempo speeds up, the instruments still include the orchestra and a tambourine was added. The music quickly becomes quiet with a long pause and returns to the sound of the trumpet just like in the beginning of the piece along with the orchestra. There is a great crescendo and all of the instruments join in together, to me this section really clashes due to all the different sounds. This is where the gun shot sound comes in. All of the instruments join in a long scale that continues to decrescendo as the tempo slows. This is a simple part to write but I believe it is a very good part because it makes all of the instruments really need to work to stay together because it would be very obvious if one were a note off on the scale. As the scale ends the instruments instantly come to a loud crash. There are so many bells and trumpets and other instruments playing that it is hard to distinguish what is going on. This part is very repetitive with all of the instruments playing. The song then changes into a faster tempo and I recognize this tune from somewhere else, it is the trumpets and drums mainly playing until the cannon sound returns once again, and we come back to the battle scene. The is a very big, dramatic scale leading into the large bell sounds as the song is ending. All of the instruments then play the same half notes with short pauses between them and end with a long note to finish of the song. Overall, I really enjoyed this piece it was very interesting to listen to and hear all the different ways that the composer switched up the mood in the song. Question 8: Mozart Don Giovanni Act 2 Finale Part 2 Commendatore Scene is a great piece of opera, and I usually do not like opera. This part of the opera takes place in Don Giovanni’s dining room, he is having a feast made for a king when Donna Elvira arrives to tell him that she is no longer mad at him, but he questions why she isn’t and it is because she now pities him. She then asks him to change his lifestyle, but he refuses to and laughs claiming that women and wine are the necessities of mankind. She angrily leaves and then you hear her scream. Don Giovanni tells Leporello to find out why she screamed. He then leaves and comes back frightened as well and jumps under the table. He tells Don Giovanni that the statue he invited from dinner has arrived. Don Giovanni meets him at the door. The statue tells him to repent  for his sins, but just as before he refuses. When he does this a flash appears and the Earth below them opens and the statue pulls him down to hell. When Donna Elvira arrives on the scene the tempo is quick with light music showing the excitement and turn of events, but when she is asking him the important question of changing his lifestyle the music quiets down because he wants you to hear what she is saying to him. Then during his answer the music crescendos as he pokes back at her and gets down on his knees as well. Then as the discussion continues the music is played as the characters speak and stopped when they stop speaking. At the end of their argument they are holding each other and both singing at the same time and while they are doing this music crescendos with their argument to make it more dramatic. Then when she leaves the room and screams the tempo speeds up and gets loud for a second when Leporello screams. When he is explain what is going on to Don Giovanni the tempo increases to its greatest point showing fear and anticipation. When Leporello stomps on the ground to imitate the steps of the statue the music mimics him as he does it, which adds to the effect. We then hear the great set of knocks at the door accompanied by the whole orchestra and woodwinds. As the flash occurs all of the instruments are playing loudly in a sort of frantic way. There then is a long pause before they all come back in together dramatically as the statue enters. The music quiets as the statue begins to talk and this makes his voice sound very loud and booming in a scary way. It then turns to just the orchestra playing this Halloween type of tune that gives off a scary, creepy feeling. As the statue talks again the music quiets, I really like how the composer does this because it really sets his voice apart from the others. As he continues to speak the music in the background does a little scale heightening the anticipation. This continues quietly as they argue back and forth. The music quiets right before the statue makes his big announcement of why he came and they comes back in with a loud burst when he begins to speak. As the statue speak the music gets louder and as he stops speaking it grows quieter to show his authority. When Don Giovanni is answering the music goes back to the orchestra making the Halloween type of music. As they are holding hands the music cuts in and out, playing when Don Giovanni is talking and stopping when the statue is. This music crescendos as the Earth opens beneath them and does not stop until the play does getting louder and  deeper in sound as it goes. Question 5: Wagner’s Die Walkure â€Å"The Ride of the Valkyries† is a very familiar piece to most people because it is used in many other things. The leitmotif is what is so memorable in this song and what has been used so many times. The purpose of the leitmotif is to have a consistent sound that listeners will remember because it continues to repeat over and over again. A motif is very important because it creates a theme, it then links this sound to the story and when people hear this again they will think back to what was going on. This leitmotif has been used for so many different movies and played by so many people. I think the leitmotif is a great way to make a piece stand out, generating a common theme and repeating it over and over will stick it into the listeners minds and they will anticipate and expect it to come and when they are correct it bring a sense of joy. I like the idea of using this type of form; I believe it is very powerful and effective. Question 7: Beethoven’s Symphony No. 5 is my favorite of all of his songs. This is another example of a great motif. The first four notes of this piece set the stage for the rest of the song. It is three short notes (G) followed by a longer note (Eb). The time signature is 2/4 and there is a quarter note rest at the beginning of the bar. This was actually used in World War 2 as ‘dot-dot-dot-dash’ for ‘V’, which stood for victory. This is a very widely known set of four notes. The best part about this piece is the fermata that Beethoven put in the opening because it is an indefinite hold which means that the conductor can hold onto the note as long as he wants.

GLOBALIZATION Essay Example | Topics and Well Written Essays - 1250 words

GLOBALIZATION - Essay Example In the opinion of (Steger 22), in later part of the 20th century, the world found economic growth as ulterior factor for progress and power so, nations standing aloof meant retrogress and backwardness to them. To have a rational analysis of economics in globalization phenomenon, I have structured this essay in two main sections. First section discusses correlation between global environment and local issues. Further, second section exhaustively deals with implications of poverty on global environment as well as on local level. In this section, argumentative approach is taken regarding what poverty literally means to global environment as well as to local one. Finally, this paper ends up with a detailed Globalized world has a logical association with local issues because, local issues profoundly influence global environment. In this highly globalized world local problems become international and international concerns have implications on local level so, there is strong relationship between global environment and local issues. These issues include many things such as: concerns relating to environmentalists, third world countries, and critics of capitalism, business organizations and trade unions of rich countries. Further, health issues, labor rights, cultural issues and issues of national integrity also have nexus with international environment. International arena is more concerned with dealing with these problems as they pose threat to unification of the world driven by communication, transportation and information technology. International scenario is concerned with issues of environmentalists because global world does not seem to have same environmental conditions across the globe. Further, global warming which has serious implications for some countries, but has a sunny side for others, has seriously affected globalization process. In this connection, world

Curriculum History of the United States Essay Example | Topics and Well Written Essays - 1000 words

Curriculum History of the United States - Essay Example tes formal education system experienced a relative period of stabilization that allowed institutions to come together under a common ideal (Zais 1976). Even as curriculum development began to gain structured form, initial developments occurred through the gradual accumulation of diverse subjects: mathematics was followed by an array of sciences, including botany, anatomy, physics, astronomy, and geology. Soon after this subjects for non-college bounds students were added, such as typewriting, woodworking, and metallurgy. However, the ultimate array of subjects remained haphazard, unlike the well-structured form it progressively attained. Recognizing the haphazard curriculum, in 1892 a famous committee was formed to help add structure to the loosely formed curriculum. The group was termed the Committee of Ten and was headed by the President of Harvard at the time – Charles Eliot. The committee understood that the unstructured format of the current education system was pernicious to societal development, so they set out to bring order to the chaos (Zais 1976). Eliot and the committee determined that the greatest means to accomplish this would be to have the curriculum adhere to the already established college structure and function solely to prepare students for higher education. As a result, the core courses that had come together immediately after the Civil War were kept and substantiated, yet the elements of the curriculum designed for students not college-bound was discarded as unnecessary. Historians and educational theorists regard this last point as especially relevant to the changing view of learners ov er time, as its underlining assumption was that these core courses, even if they didn’t target specific vocational aspects of the learner’s development, would have the ultimate benefit in preparing them intellectually for whatever task they undertook. Even as these earlier curriculum formulations considered the development of the human, it wasn’t

Chapter 24 Essay Example | Topics and Well Written Essays - 2500 words

Chapter 24 - Essay Example Whereas the aromatic compounds are those compounds which have a cyclic carbon chain with alternating double bonds. A very important group of aromatic compounds includes benzene which is a cyclic compound with 6 carbon atoms and alternate double bonds. 24.3 The hydrocarbons in which the adjacent carbon atoms have only one carbon-carbon bond are called saturated hydrocarbons. These are called saturated compounds because all the four carbon valences are satisfied and no more hydrogen can be attached to the carbon atom. These hydrocarbons are represented by the formula CnH2n+2. Example of saturated hydrocarbon is ethane (C2H6). The hydrocarbons which contain one or more a double or triple bond in the compound are called unsaturated hydrocarbons. These compounds are called unsaturated because all the carbon valences are not satisfied by hydrogen atoms. The alkenes and alkynes are the examples of unsaturated compounds represented by the formula CnH2n and CnH2n-2. Example of unsaturated hydrocarbon is ethane (C2H4). 24.9 A carbon atom in a compound is called chiral, if the mirror image of this compound cannot be superimposed on itself. In a simplified way, if all the four substituent of a carbon atom are different, then such a carbon atom will be chiral. An example of such a compound is bromochlorofluoromethane. 24.25 CH3CH(NH2)COOH and CH2(OH)CH(NH2)COOH are chiral amino acids as all the four substituent of the central carbon atom are different, so the... 24.27 Structural formula of: a) 3-methylhexane b) 1,3,5-trichloro-cyclohexane c) 2,3-dimethylpentane d) 2-bromo-4-phenylpentane e) 3,4,5-trimethyloctane 24.31 Structures are: a) 1-bromo-3-methylbenzene b) 1-chloro-2-propylbenzene c) 1,2,4,5-tetramethylbenzene 24.34 Lewis Structure: a) Alcohol: b) Ether c) Aldehyde d) Ketone e) Carboxylic acid f) Ester g) Amine 24.41 The products are: a) CH3-CH2-COOH + H2O b) H2-C=CH-CH3 c) Not Clear 24.43 The possible isomers of C7H7Cl with a benzene ring are: a) b). c) d) 24.49 Given: Density of octane = 0.70 g/ml Volume of octane = 1 lt = 1000 ml Therefore; mass of octane is 700 g As the molecular weight of octane is 114.23 g/mole; so the total moles of octane burnt are (700/114) = 6.13 moles We know each mole of octane requires 12.5 moles of oxygen for complete combustion. Therefore for the combustion of 1 lt of octane, the oxygen required will be (12.5*6.13 =) 77.875 moles. It is known that volume of 1 mole of a gas at 20oC is 24.04 lt. So the volume of oxygen required would be (77.875*24.04 =) 1872.2 lt. Given that oxygen is 22% of the air. So the total volume of air required is (1872.2*100/22 =) 8510 lt. Answer: 8510 lt. of air is required for complete combustion of 1 lt. of octane. 24.53 The structural isomers of C4H8Cl2 are: 1. 1,1-dichlorobutane 2. 1,2-dichlorobutane This is a chiral structure. 3. 1,3-dichlorobutane This structure has a chiral carbon. 4. 1,4-dichlorobutane 5. 2,3-dichlorobutane This structure is chiral. 6. 1,1-dichloro-2-methyl-propane 7. 1,3-dichloro-2-methyl-propane 8. 1,2-dichloro-2-methyl-propane 24.59 The structure of: a) Cyclopentane b)