Table of Common Ka Values for Weak Acids

Table of Common Ka Values for Weak Acids Ka is the equilibrium constant for the dissociation reaction of a weak acid. A weak acid is one which only partially dissociates in water or an aqueous solution. The value of Ka is used to calculate pH of weak acids. The pKa value is used to choose a buffer when needed. Choosing an acid or base where pKa is close to the pH needed gives the best results. Relating pH, Ka, and pKa pH, Ka, and pKa are all related to each other. For an acid HA: Ka [H][A-] / [HA]pKa - log KapH - log([H]) At the halfway point on an equivalence curve,  pHpKa Ka of Weak Acids Name Formula Ka pKa acetic HC2H3O2 1.8 x 10-5 4.7 ascorbic (I) H2C6H6O6 7.9 x 10-5 4.1 ascorbic (II) HC6H6O6- 1.6 x 10-12 11.8 benzoic HC7H5O2 6.4 x 10-5 4.2 boric (I) H3BO3 5.4 x 10-10 9.3 boric (II) H2BO3- 1.8 x 10-13 12.7 boric (III) HBO32- 1.6 x 10-14 13.8 carbonic (I) H2CO3 4.5 x 10-7 6.3 carbonic (II) HCO3- 4.7 x 10-11 10.3 citric (I) H3C6H5O7 3.2 x 10-7 6.5 citric (II) H2C6H5O7- 1.7 x 105 4.8 citric (III) HC6H5O72- 4.1 x 10-7 6.4 formic HCHO2 1.8 x 10-4 3.7 hydrazidic HN3 1.9 x 10-5 4.7 hydrocyanic HCN 6.2 x 10-10 9.2 hydrofluoric HF 6.3 x 10-4 3.2 hydrogen peroxide H2O2 2.4 x 10-12 11.6 hydrogen sulfate ion HSO4- 1.2 x 10-2 1.9 hypochlorous HOCl 3.5 x 10-8 7.5 lactic HC3H5O3 8.3 x 10-4 3.1 nitrous HNO2 4.0 x 10-4 3.4 oxalic (I) H2C2O4 5.8 x 10-2 1.2 oxalic (II) HC2O4- 6.5 x 10-5 4.2 phenol HOC6H5 1.6 x 10-10 9.8 propanic HC3H5O2 1.3 x 10-5 4.9 sulfurous (I) H2SO3 1.4 x 10-2 1.85 sulfurous (II) HSO3- 6.3 x 10-8 7.2 uric HC5H3N4O3 1.3 x 10-4 3.9

Nursing shortage Research Paper Example | Topics and Well Written Essays - 1500 words

Nursing shortage - Research Paper Example The nurse also helps a patient in the carrying out of the therapeutic activities instructed by the physician. The nurse works as a part of a team with others. Together they help in running the program for recovery and improvement to health. They as support those who are dying to appreciate the transition and attain peace of mind. These roles bring out the crucial aspects in nursing. Further, they show the relationship that exists between a nurse and a patient (Feldman, 2011). The nurse and the system of nursing exist within regulated structures. This is essential because of the support that has in terms of resource allocation and credibility. Nursing operates within the health care system, which is changing rapidly. Thus, the stability of nursing depends on proper organization delivering of care, regulated practice for quality assurance and adequate preparation of the nursing profession. This outline is to give a peek into the gap left when we suffer a shortage in the nursing profession (Rosseter, 2012). In May, the year 2011, the recruitment agencies and employers posted over 121,000 ads for nursing positions (Stiger et al, 2009). This was a 46% increase in the demand of the nurse from the previous year 2010. In March, this year (2012), Bureau of Labor Statistics reported that 20% of the total job vacancies were from the healthcare institutions. This clearly shows the trend that employment vacancies are taking. The need for more professional registered nurse is rising every day (Feldman, 2011). In addition, annual rate of turnover of registered nurses is at 14% as per the report by KPMG survey 2012. Professional nursing as an occupation shows the highest tendency of growth. Projects show that the number of employed nurse will increase from 2.8 million to 3.5 million by the year 2020. This growth will partly be contributed by the retirement of about 0.5 million nurses. The shortage of nurses is going to persist in unless we find a lasting

Choose a business function (e.g. marketing HR finance) and outline and Essay - 1

Choose a business function (e.g. marketing HR finance) and outline and discuss the changing nature of work and employment in thi - Essay Example The project tries to explore the key influential factors resulting in such changes with emphasis on the challenges faced by the human resource management departments on organizations. External Factors influencing the changing nature of human resource management practices Few of the major factors that have been undergoing dramatic changes in the global scenario have been increasingly posing threat towards organizations. Consequently their business needs have also undergone changes. Technological factors, the economic challenges, and changes in the local and governmental issues are some of the key factors worth mentioning in this context. Workforce diversities, unions and political factors have also been responsible towards changing the human resource management practices in organizations. Predominantly the organization structure and culture has demonstrated changes. Globalization has generated different forms of human resource management functions in the global competitive environment . Firms which have been competing in the global competitive environment have been facing with numerous new demands on their people and their organizations. They also seem to be pushed into different and contradictory directions. In response to this, new global organizing paradigms are concentrated on the complementarities, and not on the trade-offs, on management processes, not on the organizational structures and procedures. It demonstrates a shift away from the static and traditional solutions to the global business challenges towards the acceptance of global organizations as being an evolving and dynamic network (Pucik, â€Å"Human Resources: An Obstacle to Globalization?†). The changing economic environment has also driven changes in the human resource management practices in firms. With the increasing significance and presence of the MNCs as being crucial players of the global economy, there has also been an increasing interest on the concept of international human resou rce management of these MNCs. In spite of the growing importance of this IHRM as being one of the most innovative sources of competitive advantage, there has been very little research on ways to manage the globally dispersed mass of employees belonging to the MNCs effectively. A number of studies have been conducted by the application of greater theory driven conceptual frameworks, for better understanding of the multinational corporations and the international human resources management practices undertaken in them. Following are some of the findings from the results. Firstly the general result that followed is that the human resource management practices remain localized to reflect the differences in the cultural and regulatory environments between the host and the home countries. This primarily throws light on the fact that these multinational organizations require modifying their parent human resource management practices in the overseas subsidiaries in order to achieve a degree of isomorphism with the environmental institutions of the host countries (Kim & Gray, â€Å"Summary, limitations and suggestions for further research†). Recently organizations are also faced with the growing challenge of confronting and managing workforce diversities. The shifting business realities and the social and demographic changes have increased the workforce diversi

Ground Water in Dhaka City Essay Example for Free

Ground Water in Dhaka City Essay Dhaka is the capital city of Bangladesh which has a population of about 12. 5 millions and its population rate is over 5%. Projected population is about 22 million by 2025. Dhaka is now the 7th largest populated city in the world and it is anticipated that Dhaka will be the 2nd largest city in the world by 2020. This city is full of problem and one of the major problems is water crisis. Although Bangladesh is rich in water resource, but there remains lack of safe water. The cities in Bangladesh are the centre of employment, communications and development. So, people are rapidly migrating in these cities from rural areas place putting additional pressure on the infrastructure and water resources. For this huge population in Dhaka city, water demand is also huge. And maximum portion of this greater demand is fulfilled by ground water. The daily requirement of water in Dhaka city is about 200 crore liters while WASA supplies 180 crore liters, leaving a shortage of 20 crore liters. Out of this 180 crore liters of water, 154. 50 crore liters of water are supplied from ground water. All most 85%-87% of water is supplied from under the ground and of them are from surface water. To supply this massive amount of water we need to extract a lot from the ground. Everyday demand for water is increasing and we are adding new pumps. In 1998, there were only 243 water pumps to lift water in 2004 it was 440 but now it is 560. Each of the pumps lifts 3,000 liters of water in a minute. And this is also making some problems. For this heavy extraction water level is going down rapidly. In some statistics I have found that the level of underground water has dropped down to 61. 18 meters. The average rate of decline of water level varied from 1 m to 2. 50 as the report of DWDB. Ground water depletion situation is severe in the central part of the city compare to the areas close to river bank, says DWDB. If this continue to happen then in future it will be hard to lift up underground water. Moreover, the increasing number of pumps and subsequent depletion of groundwater table increases the risk of disasters like landslide, subsidence and earthquake.

Discuss the similarities and differences between ?new terrorism? and th

Pantha rei – as it was stated by the Greek philosopher, Heraclites of Ephesus (sixth and fifth centuries B.C.) – everything flows, everything changes. Change in the contemporary world is an extremely fast process. Nothing remains the same as it was in the past. In political science especially, some notions (e.g. sovereignty) demand redefinition. The changing nature of all things also includes the political concept of terrorism. The official approach to this changing terrorism is rather complicated. The terrorist of yesterday is the hero of today, and the hero of yesterday becomes the terrorist of today . There is then a great need to know what contemporary terrorism is and what it is not. Terrorism is a calculated use of power to achieve a political change, thus violence – or equally important, the threat of violence – is used and directed in pursuit of, or in service of a political aim . Terrorism is an expression of political strategy, a willful choice made by an organization for political and strategic reasons (efficacy) rather than as the unintended outcome of psychological or social factors . However, terrorism is difficult to define because the meaning of the term has changed so frequently over the past 200 years. It has morphed from positive connotation during the French Revolution (closely associated with the ideals of virtue and democracy ), through the revolutionary movement and finally to a religiously motivated act as it is mainly perceived today. Nevertheless, we have to ask ourselves whether â€Å"old† and â€Å"new† terrorism really exists, or maybe the phenomenon we are facing today reminds us an old wine in a new bottle. Two questions frame the discussed issue: 1.  Ã‚  Ã‚  Ã‚  Ã‚  What is the nature of â€Å"new† terrorism? 2.  Ã‚  Ã‚  Ã‚  Ã‚  What is the magnitude of threat of â€Å"new† terrorism? â€Å"Old† and â€Å"new† terrorism are distinguishable in five points, as the table below shows . Old Terrorism  Ã‚  Ã‚  Ã‚  Ã‚  New Terrorism Ideological  Ã‚  Ã‚  Ã‚  Ã‚  Vague or religious motivations Hierarchical  Ã‚  Ã‚  Ã‚  Ã‚  Unorganized (lone wolf, ad hoc) therefore more difficult to penetrate Propaganda by deed (bringing issue to the table)  Ã‚  Ã‚  Ã‚  Ã‚  More violent (killing for the sake of killing) Sub-national  Ã‚  Ã‚  Ã‚  Ã‚  Transnational and International (global... ...uld be considered more dangerous. The new rules of an old game make it more lethal and unpredictable. Let us examine only one example: Nearly every terrorist group in Iraq has recently captured a foreigner but additionally, they have produced an accompanying video, where a list of demands is outlined, a deadline is set, hostages plea for their lives, and in several instances, they are killed by beheading. Then these kidnappings merge a technique of â€Å"old† terrorism in service of â€Å"new† style terrorism. Furthermore, now more than ever, the media are a tool of war. These dramas were broadcasted by the media all over the world. This is how the media helps to evolve terrorism – they send the terrorist a clear although unspoken message: to maintain access to the airwaves, you need to devise even more outrageous tactics. Thus, the new â€Å"global† terrorist, caught into the trap of globalization, will have to break more rules, cross more psychological borders, and crack more taboos in order to exist. This can be considered the most dangerous feature of the â€Å"new† terrorism – not only do we not know when the next attack will strike, we either have no idea what actually is going to happen .

Notes on Horses of the Night

Chris the boy in the ML short story–faced adversity, the no money for school -depression years that Just got worse†¦ This combined with the love of learning and ambition to be an engineer†¦ Drove him to study and work†¦ First when he was away at HAS. †¦ Then when somehow he couldn't afford? To go to Univac In Winnipeg†¦ It drove him to rebel against going home to the farm(north of Waken)†¦ He cashed in his ticket and ran away to Winnipeg. James Eriksson: He tried to work to make money to go to College to succeed In his dream. He got sales Jobs†¦ So he wasn't paid money he worked on commission†¦ OnlyIf he got someone to buy what he was selling did he make money†¦ Let was the depression and the depression got worse. You studied this Is Social†¦. Keynes people even If they did have money did not buy things†¦. The psychology of uncertainty kept them from spending money because they needed what little they had Just In case thin gs got worse and some emergency came up†¦ The war came†¦ Soldiers got paid a salary†¦ Chris enlisted (joined the army). He could afford to go to school to be an engineer if he saved the money from being a soldier. Sometime in the horror of war Chris gave up ‘hope' of ever succeeding in being an engineer.As a result of ‘losing hope' Chris lost his ‘mental health'.. To put it another way†¦ As long as Chris had something to ‘live for'(dream to be an engineer†¦ Unrealistic or not) he could cope and deal with any adversity that came his way. Once he lost hope he became mentally paralyses: â€Å"He is so passive†. IMO as long as Chris had hope†¦ He had something to work for†¦ He had meaning in life. Without hope he had no meaning†¦ Nothing to live for†¦ Without anything to live for Chris had a nervous breakdown and ended up spending the lest of his life in the mental hospital.

Wyatt Earp The Fourth Of The Civil War - 991 Words

Wyatt Earp was born march 19, 1848 in Monmouth Illinois. Wyatt was the fourth of nicholas and virginia ann earp. He had two older brother James and Virgil and older sister martha. He also had a older half brother Newton. Wyatt also had two younger brothers warren and morgan and two little sisters virginia ann and adelia. Both virginia ann and martha died at childhood. Wyatt spent most of his childhood in Illinois and iowa. Wyatts three older brothers join the civil war on the union side. Wyatt tried to run away to join several time but his father always brought him back. Wyatt was put in charge of harvesting all the crops. Wyatts brother return after the war and go to work but wyatt being too young still helped his brother virgil on the stagecoach. Wyatt is hired on the railroad in 1868 where he learns to gamble and how to box in wyoming. Wyatt decides to join his family in lamar missouri in 1869. Wyatt is made constable of the township in his father s place. Wyatt earp married uril la sutherland who dies within a ear after they wed.Wyatt sells the house he bought two months earlier. On march 28 1871 wyatt in accused of stealing a house and avoids it by fleeing. Wyatt spends the next several years working in a saloon, gambling houses, and brothels of the frontier. He has multiple relationships with prostitutes and artists because of his involvement with them. In october of 1874 wyatt helps track down and catch a horse thief which is the same crime he was accused of. HeShow MoreRelatedStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 Pageshave identified a number of skills that differentiate effective from ineffective managers.8 Technical Skills Technical skills encompass the ability to apply specialized knowledge or expertise. When you think of the skills of professionals such as civil engineers or oral surgeons, you typically focus on the technical skills they have learned throu gh extensive formal education. Of course, professionals don’t have a monopoly on technical skills, and not all technical skills have to be learned in schools