Saturday, December 28, 2019

A Timeline of Events in Electromagnetism

Human fascination with electromagnetism, the interaction of electric currents and magnetic fields, dates back to the dawn of time with the human observation of lightning and other unexplainable occurrences, such as electric fish and eels. Humans knew there was a phenomenon, but it remained shrouded in mysticism until the 1600s when scientists began digging deeper into theory. This timeline of events about the discovery and research leading to our modern understanding of electromagnetism demonstrates how scientists, inventors, and theorists worked together to advance the science collectively. 600 BCE: Sparking Amber in Ancient Greece The earliest writings about electromagnetism were in 600 BCE, when the ancient Greek philosopher, mathematician and scientist Thales of Miletus described his experiments rubbing animal fur on various substances such as amber. Thales discovered that amber rubbed with fur attracts bits of dust and hairs that create static electricity, and if he rubbed the amber for long enough, he could even get an electric spark to jump. 221–206 BCE: Chinese Lodestone Compass The magnetic compass is an ancient Chinese invention, likely first made in China during the Qin dynasty, from 221 to 206 BCE. The compass used a lodestone, a magnetic oxide, to indicate true north. The underlying concept may not have been understood, but the ability of the compass to point true north was clear. 1600: Gilbert and the Lodestone Toward the late 16th century, the founder of electrical science English scientist William Gilbert published De Magnete in Latin translated as On the Magnet or On the Lodestone. Gilbert was a contemporary of Galileo, who was impressed by Gilberts work. Gilbert undertook a number of careful electrical experiments, in the course of which he discovered that many substances were capable of manifesting electrical properties. Gilbert also discovered that a heated body lost its electricity and that moisture prevented the electrification of all bodies. He also noticed that electrified substances attracted all other substances indiscriminately, whereas a magnet only attracted iron. 1752: Franklins Kite Experiments American founding father Benjamin Franklin is famous for the extremely dangerous experiment he ran, of having his son fly a kite through a storm-threatened sky. A key attached to the kite string sparked and charged a Leyden jar, thus establishing the link between lightning and electricity. Following these experiments, he invented the lightning rod. Franklin discovered there are two kinds of charges, positive and negative: objects with like charges repel one another, and those with unlike charges attract one another. Franklin also documented the conservation of charge, the theory that an isolated system has a constant total charge. 1785: Coulombs Law In 1785, French physicist Charles-Augustin de Coulomb developed Coulombs law, the definition of the electrostatic force of attraction and repulsion. He found that the force exerted between two small electrified bodies is directly proportional to the product of the magnitude of charges and varies inversely to the square of the distance between those charges. Coulombs discovery of the law of inverse squares virtually annexed a large part of the domain of electricity. He also produced important work on the study of friction. 1789: Galvanic Electricity In 1780, Italian professor Luigi Galvani (1737–1790) discovered that electricity from two different metals causes frog legs to twitch. He observed that a frogs muscle, suspended on an iron balustrade by a copper hook passing through its dorsal column, underwent lively convulsions without any extraneous cause. To account for this phenomenon, Galvani assumed that electricity of opposite kinds existed in the nerves and muscles of the frog. Galvani published the results of his discoveries in 1789, together with his hypothesis, which engrossed the attention of the physicists of that time. 1790: Voltaic Electricity Italian physicist, chemist and inventor Alessandro Volta (1745–1827) read of Galvanis research and in his own work discovered that chemicals acting on two dissimilar metals generate electricity without the benefit of a frog. He invented the first electric battery, the voltaic pile battery in 1799. With the pile battery, Volta proved that electricity could be generated chemically and debunked the prevalent theory that electricity was generated solely by living beings. Voltas invention sparked a great deal of scientific excitement, leading others to conduct similar experiments which eventually led to the development of the field of electrochemistry. 1820: Magnetic Fields In 1820, Danish physicist and chemist Hans Christian Oersted (1777–1851) discovered what would become known as Oersteds Law: that an electric current affects a compass needle and creates magnetic fields. He was the first scientist to find the connection between electricity and magnetism. 1821: Amperes Electrodynamics French physicist Andre Marie Ampere (1775–1836) found that wires carrying current produce forces on each other, announcing his theory of electrodynamics in 1821. Amperes theory of electrodynamics states that two parallel portions of a circuit attract one another if the currents in them are flowing in the same direction, and repel one another if the currents flow in the opposite direction. Two portions of circuits crossing one another obliquely attract one another if both the currents flow either towards or from the point of crossing and repel one another if one flows to and the other from that point. When an element of a circuit exerts a force on another element of a circuit, that force always tends to urge the second one in a direction at right angles to its own direction. 1831: Faraday and Electromagnetic Induction English scientist Michael Faraday (1791–1867) at the Royal Society in London developed the idea of an electric field and studied the effect of currents on magnets. His research found that the magnetic field created around a conductor carried a direct current, thereby establishing the basis for the concept of the electromagnetic field in physics. Faraday also established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena. He similarly discovered the principles of electromagnetic induction and diamagnetism and the laws of electrolysis. 1873: Maxwell and the Basis of Electromagnetic Theory James Clerk Maxwell (1831–1879), a Scottish physicist and mathematician, recognized that electromagnetisms processes could be established using mathematics. Maxwell published Treatise on Electricity and Magnetism in 1873 in which he summarizes and synthesizes the discoveries of Coloumb, Oersted, Ampere, Faraday into four mathematical equations. Maxwells equations are used today as the basis of electromagnetic theory. Maxwell predicts the connections of magnetism and electricity leading directly to the prediction of electromagnetic waves. 1885: Hertz and Electric Waves German physicist Heinrich Hertz proved Maxwells electromagnetic wave theory was correct, and in the process, generated and detected electromagnetic waves. Hertz published his work in a book, Electric Waves: Being Researches on the Propagation of Electric Action With Finite Velocity Through Space. The discovery of electromagnetic waves led to the development to the radio. The unit of frequency of the waves measured in cycles per second was named the hertz in his honor. 1895: Marconi and the Radio In 1895, Italian inventor and electrical engineer Guglielmo Marconi put the discovery of electromagnetic waves to practical use by sending messages over long distances using radio signals, also known as the wireless. He was known for his pioneering work on long-distance radio transmission and his development of Marconis law and a radio telegraph system. He is often credited as the inventor of the radio, and he shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun in recognition of their contributions to the development of wireless telegraphy. Sources Andrà © Marie Ampà ¨re. St. Andrews University. 1998. Web. June 10, 2018.Benjamin Franklin and the Kite Experiment. The Franklin Institute. Web. June 10, 2018.Coulombs Law. The Physics Classroom. Web. June 10, 2018. De Magnete. The William Gilbert Website. Web. June 10, 2018.July 1820: Oersted and electromagnetism. This Month in Physics History, APS News. 2008. Web. June 10, 2018.OGrady, Patricia. Thales of Miletus (c. 620 B.C.E.—c. 546 B.C.E.). Internet Encyclopedia of Philosophy. Web. June 10, 2018Silverman, Susan. Compass, China, 200 BCE. Smith College. Web. June 10, 2018.

Friday, December 20, 2019

USAs Involvement in the Vietnam War Essay - 1799 Words

USAs Involvement in the Vietnam War The USA had a colossal hatred for the strong spread of communism that seemed to sweep across Eastern Asia. Although Vietnam, part of Indochina in South-East Asia was many thousands of miles away from the USA, due to obsessive paranoia and the threat of its national interest, America felt threatened adequately enough to fight a war there. The USA’s suspicion that the communists were taking over the world was exceptionally strong. Their explanation for their most paranoid attitude lay in the Korean War, the communist take-over of China, the Cold War and also the communist success over the French in Vietnam. The USA remained indirectly involved until 1965.†¦show more content†¦The earlier policy of isolationism was now over; ‘containment’ was underway and it hoped to put an end to the spread. The USA was determined that no more countries were to turn communist. Also ‘The Marshall Plan’ was set up. Marshall aid was offered to many countries inclu ding communist ones. The aid included goods, loans, food and advisers. By helping communist countries also, it could perhaps advise and persuade the benefits of capitalism, so not only was the USA using the method of containment, they were attempting to ‘switch’ those countries already made communist. 1949 was a appalling year for the USA. The USA was no longer the only nuclear power as the USSR had exploded its very own atom bomb. Also, although the USA has spent around $2 billion supporting anti-communist countries - China had become communist. This worried America immeasurably. The Vietminh, regardless of assistance from China, were forced back from 1950-1951 when General De Lattre De Tassigny inflicted a series of defeats on the Vietminh. The USA supported the French as their opponents were communists. If the French won, Vietnam wouldn’t be communist. The USA began becoming indirectly involved by providing financial aid; $500 million a year was put into the French war effort. Also the USA helped the French set up a non-communist government in the south of the country.Show MoreRelatedTo what extent can the Tet Offensive of 1968 be described as a key turning point in the Vietnam War in the Years 1963-73? (30 marks)842 Words   |  4 PagesTo what extent can the Tet Offensive of 1968 be described as a key turning point in the Vietnam War in the Years 1963-73? (30 marks) The Tet Offensive could be described as a key turning point because it shook USA’s confidence in winning the war, both sides changed their tactics and also because it led to a decrease of support for the war in the USA. However there were many other key turning points such as the Gulf of Tonkin incident, the attack at Pleiku and the Battle of Ac Bac. Overall theRead MoreUSAs Military Involvement in Korea Essay1148 Words   |  5 PagesUSAs Military Involvement in Korea The USAs military involvement in the Korean War is often seen as Americas desire to defend democracy. This argument is often difficult to refute considering economically there was little to gain from Korea and there was a certain risk of coming into conflict with the USSR. Although there are factors which I will later explore that are indicative of there being another purpose to the Korean War, much of the evidence shows the USAsRead MoreThe Vietnam War : We Can Not Understand War Without Understanding Culture1267 Words   |  6 PagesThe Vietnam War â€Å"We cannot understand war without understanding culture† â€Å"Involvement in two world wars and the Cold War transformed America into a â€Å"crusader state† convinced of the superiority of its institutions and way of life and intent on imposing them on the outside world. † Whether fought at home or abroad every war is to impact all parties involved. Such example of staggering influence on one country’s culture is no more evident then in America’s involvement in the Vietnam War. Upon enteringRead MoreCommitment Trap1030 Words   |  5 PagesWith regards to Vietnam under Kennedys presidency, there are many arguments both for and against the idea of commitment trap, Kennedy certainly escalated military involvement in Vietnam but did he have a choice? Or had his predecessors committed him in Vietnam long before he came into the Whitehouse? There is no doubt that Johnson was the one who fully placed ground troops in Vietnam in 65 and created his legacy of Johnsons war, but did any of the previous presidents give h im any other optionRead MoreAmericas Involvement in Vietnam Essay example827 Words   |  4 PagesAmericas Involvement in Vietnam From the early 1800’s up until 1931 Vietnam was controlled by France, Frances rule was then ended as they were forced to pull out of Vietnam due to the start of WW2, France left a ‘puppet ruler’ named Emperor Bao Dai. This left Vietnam vulnerable to invasion which was an opportunity Japan could not refuse and took advantage of Vietnam’s situation by invading. This sparked the return of a well known Vietnamese communist, Ho Chi MinhRead MoreWeakness Of The American Foreign Policy Essay1733 Words   |  7 Pagesscenario in Afghanistan prior to 1979 led up to this invasion, as it gradually began to pose a threat to Russia. In the context of the Cold War, aggressive expansionism would have been a reason for Russia’s desire to expand their Communist ideology, as Carter implies. Additionally, the USSR had previous experience of mistrust, such as the threat that the Cold War represented in terms of the mutual suspicion with the US. Also, the Non-aggression pact with Hitler’s Germany in 1939 which soon got brokenRead MoreThe Pentagon Papers : Setting A Precedent886 Words   |  4 PagesThe Pentagon Papers Setting A Precedent After World War 2, faith in the United States government was at an all time high. A brief, superficial, and weak understanding of the history on the aftermath of World War 2 leads the reader to understand that not only did the United States help defeat the evil Nazis, the fascist Italians, and the imperial Japanese. In the wake of World War 2, the United States of America ended up cementing itself as a world power – if not the world power, usurping the emptyRead MoreEssay on Reasons For The United States Involvement In The Vietnam War1108 Words   |  5 PagesThe United States became increasingly involved with the War in Vietnam mostly thanks to their enmity with Russia due to the fact they were Communist, and how the USSR spread claiming countries that could’ve been turned democratic and become trading partners of the US. While Russia, Britain and the USA were all allies in WW1, they disagreed on many things, especially on how Germany should be punished and how shoul d Europe be handled. THE USSR AND THE USA. During 1940-1970, the USSR and the USARead MoreEssay on The War in Vietnam1662 Words   |  7 PagesThe War in Vietnam America became increasingly involved in the war in Vietnam, mainly because of the domino theory, the fear of the spread of communism. If South Vietnam fell to the communist the US feared that communism would spread throughout Asia and to neighbouring countries. The influence of the previous presidents also caused another main reason for the US to become more involved in Vietnam. But there is one underlining fact; if the ‘French had not left, AmericaRead MoreWhat Was A Communist Government?1093 Words   |  5 Pagesanti-communist due to the cold war occurring between the USA and Russia, a communist country, in the 1950s. While USA’s government system during this time was a Democracy. They had the fear of this communist society expanding throughout the entire south East Asia. 3. Describe France’s involvement in Vietnam’s history. When did they set up a colony? Why? Explain what led to the French leaving Vietnam? When did this occur? In 1859, Napoleon iii decided to invade Vietnam. It was due to the upsurge in

Thursday, December 12, 2019

Cultivating Cultural Differences Asymmetric-Myassignmenthelp.Com

Question: Discuss About The Cultivating Cultural Differences Asymmetric? Answer: Introducation This reflection has been executed on the topic Business Communication in which discussion will be made regarding the intercultural communication. Intercultural communication is an important aspect of the business environment. With the increase in the number of organisations operating at international level or global level, there is an increase in the number of employees, customers and other stakeholders belonging from different cultures who are crucial for every business (Ainsworth, 2013). This globalisation has resulted in an increase in the communication between the individuals belonging from different linguistic and cultural backgrounds. The term intercultural communication can be defined as a discipline which helps in studying the communication process adopted across the different cultures and other groups and the manner in which culture of the organisation affects the communication (Blahova, 2015). Effective intercultural communication is essential for the business as it helps i n dealing with the different barriers faced by the organisation due to differences in language and stereotypes (Martin Nakayama, 2012). It is vital to develop the knowledge of the concept of intercultural communication and its importance for the business. Businesses operating at global level need to develop the understanding of the intercultural communication (Fu, 2010). Every aspect of the business is dependent on the intercultural communication such as human resource, marketing, production and other departments (Ostendorf, 2012). Use of effective intercultural communication method or process will enhance the communication process used by the organisation for communicating with the employees, customers and other stakeholders. Poor communication among the employees, customers and other stakeholders can affect the performance of the organisation as well as sales of the organisation (Padhi, 2016). There are various barriers to intercultural communication process of the business. These barriers include the difference in the language, difference in the body language, level of context, adverse stereotypes and prejudices and feelings and emotions. Strategies can be used for the purpose of overcoming these barriers to intercultural communication (Zheng, 2015). These strategies include acknowledging the differences, focusing on the behaviour, development of intercultural sensitivity and accepting the differences by providing intercultural communication training programs (Ybema Hyunghae, 2009). Cultural difference is an interesting topic which has attracted me towards executing the reflection on the intercultural communication. Cultural difference is an important element of the dynamic and global business environment which has gained much importance. I have selected this topic for this reflection due to three reasons. I have conducted this reflection on intercultural communication as it is an essential element of the dynamic and global business environment. I will enhance my knowledge regarding the concept of cultural differences and link between cultural differences and communication process. This knowledge will help me in shaping my knowledge with the trending aspects of the business environment. Another reason hidden behind the execution of this reflection on this topic is to develop a base for the future role or career role as being a professional one must develop effective communication skills for communicating with the people belonging to different cultures properly. I will use the knowledge and skills gained regarding the reflection topic for meeting the roles and responsibilities assigned and ensuring that the performance is not getting affected due to the lack of knowledge of cultural differences and the manner in which these can be dealt in. I will ensure that cultural differences are not resulting in disputes or conflicts in the organisation I will be a part of. Another reason behind the selection of this topic for my reflection is to use this knowledge gained for establishing a healthy relationship in the professional career. This knowledge of the intercultural communication process will help me communicate with the different stakeholders in a better manner. For gaining the advantage of the growth opportunities available, I need to enhance the knowledge regarding the crucial aspects of the business environment. I will use the knowledge for enhancing the quality of the relationship shared with employees, customers, management and other entities in a better way. Conflicts may arise at the workplace due to the lack of knowledge of cultural differences and intercultural communication channels. I will be able to deal with these conflicts arising at the workplace in a better way by applying the approach of intercultural communication. In the present era, I have faced various challenges due to the lack of knowledge of intercultural differences and communication strategies for dealing with these differences. I have faced the issue in communicating with people due to lack of knowledge of intercultural communication. I will use the knowledge in the present as well as future for dealing different situations. During the present era, I have analysed that I have issues in communicating with the people of different culture due to lack of knowledge of the communication channel which can be used for communicating with them. During the execution process of this reflection, I have understood the role of cultural differences and intercultural communication in dealing with these types of situations. I will use the intercultural communication process for communicating in an effective manner without any miscommunication or misunderstanding. I will use the knowledge for performing the roles and responsibilities assigned to me in future. This knowledge will help in matching with the roles and responsibilities assigned. I have gained knowledge regarding the manner in which barriers to intercultural communication can be dealt. As a professional, I have to deal with different individuals at the workplace. These individuals include customers, employees, managers, management, shareholders, subordinates or investors. Differences in the culture can result in lack of effective communication and increase the chances of errors. This can affect the satisfaction level of the individuals I am communicating with. I will ensure that I am dealing with the individuals from different cultures. This knowledge of intercultural communication will help me in gaining the advantage of the opportunities for the growth in a career. Thus, it can be concluded that intercultural communication knowledge is important for every individual for its present and career perspective. I will apply the knowledge gained in a better manner for dealing with situations I will face. I will be able to interact with the people belonging to different cultures which will enhance my knowledge and skills. References Ainsworth, J., 2013, Business Languages for Intercultural and International Business Communication: A Canadian Case Study, Business Communication Quarterly: BCQ, 76, 28-50. Blahova, M., 2015, Specific Role of Non-verbal Communication in Business, European Scientific Journal April 2015 edition, 11(10). Fu, Z.Y., 2010, A Study of How to Develop Students Intercultural Communication Competence (ICC) in Business English Teaching (BET), Asian Social Science, 4, 84. Martin, J. Nakayama, T., 2012, Intercultural Communication in Contexts, McGraw-Hill Humanities. Ostendorf, A.M., 2012, Intercultural business communication, Business Communication Quarterly: BCQ, 75, 221-224. Padhi, P. K., 2016, The Rising Importance of Cross Cultural Communication in Global Business Scenario, Journal of Research in Humanities and Social Science, 4(1), 20-26. Ybema, S. Hyunghae, B., 2009, Cultivating Cultural Differences in Asymmetric Power Relations, International Journal of Cross Cultural Management, 9(3), 339 358. Zheng, M., 2015, Intercultural Competence in Intercultural Business Communication, Open Journal of Social Sciences, 3, 197-200.

Wednesday, December 4, 2019

Gifted and Talented Children free essay sample

A study on the academic resources for gifted children. This paper examines the education system resources for gifted and talented children. The paper states that these children are often the most neglected population in the classroom, and are expected to independently develop academically. The author writes about the often emotional torment of the gifted child, and the need for training and coaching these children as would be done for a child with athletic talent. Gifted and talented, in the past as well as the present, are the ones who have received the least attention as far as education is concerned. The teachers and ones who are responsible for preparing the education system take it for granted that children with exceptional gifts will just develop academically on their own. A gifted child or adult, whether creative, athletic or intelligent, sometimes intimidate authorities who are to educate or supervise them as well as people on their own level which is one of the reasons their resources are the most overlooked, and they lack the skills and knowledge in order for them to achieve their full potential. We will write a custom essay sample on Gifted and Talented Children or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page

Thursday, November 28, 2019

Separation of a Base Neutral Mixture Essay Sample free essay sample

A normally used method of dividing a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at some phase of merchandise purification. In this experiment you will utilize extraction techniques to divide a mixture of an organic acid. a base. and a impersonal compound. Organic acids and bases can be separated from each other and from impersonal compounds by extraction utilizing aqueous solutions of different pH values. Most organic carboxylic acids are indissoluble or somewhat soluble in H2O. but these compounds are extremely soluble in dilute aqueous Na hydrated oxide because the acid is deprotonated by the base bring forthing the Na carboxylate salt. RCO2H ( solv ) + OH– ( aq ) > RCO2– ( aq ) + H2O ( aq ) The carboxylic acid can be selectively isolated by fade outing the mixture in an organic dissolver that is non-miscible with H2O. and so pull outing the solution with Na hydrated oxide. We will write a custom essay sample on Separation of a Base Neutral Mixture Essay Sample or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The basic aqueous solution incorporating the carboxylate salt is acidified. doing the Na carboxylate salt to change over back to the carboxylic acid. which is non H2O soluble. The acid will precipitate from the solution. as shown here. RCO2– ( aq ) + H+ ( aq ) > RCO2H ( s ) Organic bases ( e. g. . aminoalkanes ) that are indissoluble in H2O can be separated by extraction with hydrochloric acid. Addition of HCl to the aminoalkane produces the corresponding ammonium salt. which is soluble in H2O but non in organic dissolvers. The aminoalkane can be recovered from the aqueous solution by intervention with a base. change overing the ammonium salt back to the aminoalkane. The aminoalkane is non water-soluble and will precipitate. as shown here. Using your apprehension of these belongingss. separation of a mixture incorporating a carboxylic acid. an aminoalkane. and a impersonal compound can be carried out via consecutive acid and base extractions. The precipitates will be collected and characterized by runing temperature analysis. In this experiment. you will Separate a mixture incorporating benzoic acid. 3-nitroaniline. and naphthalene. Calculate the per centum recovery of each constituent in the mixture. Measure the thaw temperature of each stray compound. 60 mL separatory funnel four 50 milliliter Erlenmeyer flasks two 100 milliliter beakers gravitation filtration setup vacuity filtration setup support pealing spatula disposable Pasteur pipets and bulb 10 milliliter graduated cylinder two ticker spectacless pH paper balance Part II Melting Temperature weighing paper sample mixture diethyl ether 6. 0 M hydrochloric acid solution 1. 0 M Na hydrated oxide solution 6. 0 M Na hydrated oxide solution Na sulphate. Na2SO4. anhydrous cold distilled H2O in a wash bottle saturated sodium chloride solution ice compressed air LabQuest or computing machine interface LabQuest App or Logger Pro Vernier Melt Station glass capillary tubings. one terminal closed tissues ( sooner lint-free ) isolated samples from Part I mortar and pestle benzoic acid ( optional ) 3-nitroaniline ( optional ) naphthalene ( optional ) ProcedurePart I Extraction 1. Obtain and wear goggles. Protect your weaponries and custodies by have oning a long-sleeve lab coat and baseball mitts. Conduct this reaction in a fume goon. 2. Weigh out about 1. 0 g of the sample mixture. Record the mass to the nearest 0. 001 g. Transfer the mixture to a 100 milliliter beaker and fade out it in 15 milliliter of diethyl quintessence. Caution: Diethyl ether is flammable. Be certain that there are no unfastened fires in the room during the experiment. 3. Clamp the support pealing onto a ring base and topographic point the separatory funnel into the ring. Pour the solution into the separatory funnel and add 5 milliliter of 6. 0 M hydrochloric acid. Caution: Manage the hydrochloric acid with attention. Can do painful Burnss if it comes in contact with the tegument. 4. Cap the funnel and gently agitate several times. venting often to avoid force per unit area buildup. When venting the funnel. indicate the tip off from your face and open the turncock to let go of the f orce per unit area. Put the funnel on a support pealing with a clinch and let the dissolver and aqueous bed to divide. Leave the funnel uncapped. 5. Drain the lower aqueous bed into a 50 milliliter Erlenmeyer flask. Repeat the extraction with another 5 milliliter of 6. 0 M hydrochloric acid. run outing the 2nd aqueous bed into the same Erlenmeyer flask. Salvage the dissolver bed in the separatory funnel for later usage. 6. Cool the flask incorporating the acidic aqueous infusions into an ice H2O bath. Slowly add 6. 0 M Na hydrated oxide with a pipet until the aqueous bed is basic. Use pH paper to prove. Caution: Sodium hydrated oxide solution is acerb. Avoid sloping it on your tegument or vesture. Organic Chemistry with Vernier Separation of Organic Compounds by Acid-Base Extraction Techniques 7. Roll up the solid utilizing vacuum filtration and salvage the solid for runing temperature analysis in Part II. Note: Be certain to enter the mass of the filter paper before puting it in the vacuity funnel. 8. Extract the saved quintessence bed in the separatory funnel with three 5 mL parts of 1. 0 M Na hydrated oxide. Drain the aqueous bed into a 50 milliliter Erlenmeyer flask. Salvage the quintessence bed in the separatory funnel. 9. Cool the flask incorporating the basic aqueous infusion in an ice H2O bath. Using a pipet. easy add 6. 0 M hydrochloric acid until the aqueous bed is acidic. Use pH paper to prove. Caution: Manage the hydrochloric acid with attention. Can do painful Burnss if it comes in contact with the tegument. 10. Roll up the solid utilizing vacuum filtration and salvage the solid for runing temperature analysis in Part II. Note: Be certain to enter the mass of the filter paper before puting it i n the vacuity funnel. 11. Add 10 milliliter of saturated aqueous Na chloride solution to the ether solution staying in the separatory funnel and agitate gently. Be certain to vent often. 12. Let the beds to divide and fling the lower aqueous Na chloride bed. Pour the solvent bed into an Erlenmeyer flask incorporating about 1 g of anhydrous Na sulphate and let it to stand for approximately 10 proceedingss. twirling on occasion. 13. Gravity filter the contents in the flask. including the Na sulphate. into a clean 100 milliliter beaker. Evaporate the quintessence in the fume goon. Caution: Diethyl ether is flammable. Be certain that there are no unfastened fires in the room during the experiment. Do non go forth unattended 14. Weigh the cured solid and record the mass to the nearest 0. 010 g. Save the solid for the thaw temperature analysis in Part II. Part II Melting Temperature 15. Obtain a little sum of the stray solid from the acerb extraction. The solid should be in a powdery signifier. If it is non. utilize a howitzer and stamp to carefully crunch the solid to a pulverization. Pack a capillary tubing 3?4 millimeter ( ~1/8 inch ) deep with your sample. 16. Check the control dial on the Melt Station to corroborate that it is in the Off place. Connect the Melt Station power supply to a powered electrical mercantile establishment. 17. Connect the Melt Station to a LabQuest or to a computing machine interface. Choose New from the File bill of fare of the informations aggregation plan. 18. Carefully insert the capillary tubing of solid into one of the sample holders of the Melt Station. 19. Get down roll uping runing temperature informations utilizing the Melt Station. 20. Adjust the control dial in order to find the approximative thaw temperature scope for the sample. 21. When finished. halt informations aggregation and turn the dial to the Fan/Cooling scene . Record the thaw temperature scope in your informations tabular array. Organic Chemistry with Vernier Experiment 5 22. Store the tally and roll up a 2nd tally. if desired. 23. Repeat the necessary stairss to roll up runing temperature informations for the stray solids from the base and impersonal extractions. 24. At the terminal of the experiment turn the control dial on the Melt Station to Off. Dispose of the capillary tubings as directed by your teacher. DATA TablePart I Extraction Mass of mixture ( g ) Mass of filter paper ( g ) Mass of filter paper and benzoic acid ( g ) Mass of benzoic acid ( g ) Mass of filter paper ( g ) Mass of filter paper and 3-nitroaniline ( g ) Mass of 3-nitroaniline ( g ) Mass of naphthalene ( g ) Part II Melting Temperature Measured runing temperature scope ( ?C ) Benzoic acid 3-nitroaniline Naphthalene DATA ANALYSIS1. Pull the construction of each of the compounds. 2. Sketch a flow chart depicting the separation of the mixture and the isolation of each compound. 3. What was your percent recovery for each of the three compounds? Assume equal sums of the carboxylic acid. aminoalkane. and impersonal compound were present in the unknown mixture. Safety information Essential teacher background information Directions for fixing solutions Important tips for successfully making these labs The complete Organic Chemistry with Vernier lab manual includes 26 labs and indispensable instructor information. The full lab book is available for purchase at: hypertext transfer protocol: //www. Vernier. com/products/books/chem-o/ Vernier Software A ; Technology 13979 S. W. Millikan Way †¢ Beaverton. OR 97005-2886 Toll Free ( 888 ) 837-6437 †¢ ( 503 ) 277-2299 †¢ FAX ( 503 ) 277-2440 [ electronic mail protected ]/*†¢ World Wide Web. Vernier. com

Sunday, November 24, 2019

Essay on Writing Is a Passion

Essay on Writing Is a Passion Essay on Writing Is a Passion Jordy Rodriguez May 28, 2013 ENG 102 Mr. Louis Writing Is A Passion After years and years of school, thirteen years to be exact, I have noticed that reading and writing have always been my strongest subjects. I am fortunate enough to have the ability to have an open-mindset, which helps ideas come to mind extremely fast. Writing has become my passion, through writing, you can easily tell what kind of person someone is, from the way they format their paper, to the grammar used to complete their essays. Although writing and reading may seem like they come hand-in-hand, I believe otherwise. Writing involves reading, but reading does not involve writing. Throughout my educational life, I have noticed that reading and writing are two huge factors in education. You are required to read and write in mostly every class you will have throughout your life. From a math class, to your English class, there will always be some form of reading and writing. Although it may not seem like if reading and writing are key factors, they are, reading and writing involve t he brain to think to an enormous extent, when it comes to reading and writing, everything is possible. Your mind is opened up and you have the ability to come up with a million ideas, both reading and writing really get your mind working. Through writing I have been able to express myself much more than I can when speaking. When speaking there is no â€Å"rough draft† you cannot re-phrase or re-word any of your original ideas. Rather than when writing, you can edit your writing all you want before anyone reads your work. You have the ability to re-word words that have been utilized too much, or maybe you just want to add some â€Å"spice† to your paper. Writing has helped me throughout my school years because I am the kind of person who can think and come up with ideas, but I am unable to express most of my ideas verbally. Through writing, you can get to anyone, writing is a way to communicate with no noise whatsoever, although there is nothing said verbally, sometimes , words in writing may seem harsh, but verbally do not

Thursday, November 21, 2019

Discussion Topics Assignment Example | Topics and Well Written Essays - 500 words

Discussion Topics - Assignment Example If power is centralized, an abusive government can come into existence and misuse the state of security, to cause massive and unreasonable destruction to both the United States and other nations. Divisive power observes control and regulation in decision-making. The American constitutional structure has advantages such as the practice of pragmatism, which is very relevant and applicable to a country as large as the United States of America. The constitutional structure creates laboratories of democracy. There is experimentation of policies and state governments can learn from the successes and failures of other states. It helps set a state of political stability by separating national government from areas of contentious issues. Finally, the constitutional structure helps encourage pluralism i.e. by expanding to local, state and national levels. By separating powers, it prevents tyranny (Beard & William 87). The disadvantages of the constitutional structure include prevention of national policy. It lacks single policy on issues i.e. each state with its own and this causes confusion. It also leads to lack of accountability; the overlap of state and national boundaries makes it hard to assign blame on policies that have failed. To other democracies, the structure of the constitution depends on the geographical and political coverage. Small nations would function well with parliamentary systems, but to fully practice democracy, federalism would be the most effective. Members of the public should be adequately informed on the issues of governance and politics in order to fully practice democracy. This also helps in the monitoring of the activities of the people in authority. Ignorance would definitely reduce the effectiveness of a democratic nation. Most of the Americans, however, are not well equipped with this information to guide the policies of the