Essay on Solubility and Nr

Essay on Solubility and Nr Essay on Solubility and Nr Malarie Martin CHEM 115 General Chemistry Group 4 Experiment 8: Ionic Reactions Purpose: In this lab we will study the nature of ionic solutions while observing their reactions. We will then write balanced equations to include the net ionic equations for the precipitation reactions observed. Procedure: 1. Place a piece of black and white paper behind each well plate in order to observe the reactions with each combination. Record any reactions observed. 2. In the 96 well plate place 2 drops of cobalt nitrate into 7 of the wells marked A. 3. Place 2 drops of copper nitrate into 7 of the wells in the row marked B. 4. Place 2 drops of iron nitrate into 7 of the wells in the row marked C. 5. Place 2 drops of barium nitrate into 7 of the wells in the row marked D. 6. Place 2 drops of nickel nitrate into 7 of the wells in the row marked E. 7. Then place 2 drops of sodium phosphate into 5 of the vertical wells in the column marked 1. 8. Then place 2 drops of sodium iodide into 5 of the vertical wells in the column marked 2. 9. Then place 2 drops of sodium sulfate into 5 of the vertical wells in the column marked 3. 10. Then place 2 drops of sodium chloride into 5 of the vertical wells in the column marked 4. 11. Then place 2 drops of sodium bicarbonate into 5 of the vertical wells in the column marked 5. 12. Then place 2 drops of sodium carbonate into 5 of the wells in the column marked 6. 13. Then place 2 drops of sodium hydroxide into 5 of the wells in the column marked 7. 14. Record color change, precipitate, and/or bubble that are observed into table format. 15. Do not place the pipet directly into any of the solutions when adding the chemicals to the well plate. 16. Avoid contact with skin and clothes and clean up supplies and area thoroughly. Results: 1 (Sodium Phosphate) 2 (Sodium Iodide) 3 (Sodium Sulfate) 4 (Sodium Chloride) 5 (Sodium Bicarbonate) 6 (Sodium Carbonate) 7( Sodium Hydroxide) A (Cobalt Nitrate) Rxn purple NR NR NR Rxn Darker Rxn Rxn turquoise B (Copper Nitrate) Light blue Rxn Dark Yellow NR NR Rxn Rxn Rxn C (Iron Nitrate) Rxn Cloudy Yellow NR NR Dark Yellow Dark Yellow Light Yellow D (Barium Nitrate) Rxn Cloudy NR White NR Rxn Rxn Dark Yellow E (Nickle Nitrate) Rxn NR NR NR Rxn Rxn Rxn NR: No precipitate forms Rxn: Precipitate is formed Cations used: Ni2+, Ba2+, Cu2+, NO3-, Co2+, Fe3+, Anions used: NO3-, PO43-, I-, SO42-, Cl-, 2CO32-, CO32-, OH- Discussion: A - Compare your results with the

Victorian Damsel in Distress Essays

Victorian Damsel in Distress Essays Victorian Damsel in Distress Paper Victorian Damsel in Distress Paper As well as being unnervingly clever, controlling, and intuitive, which probably all stem from his early education, in private educational systems, but who knows, for he doesnt mention his family or origin in this book, and as I am aware, nor does he in other books of this series he also uses sarcasm. The author may have done this, to stop people from working out Sherlock, in order to keep them guessing, and therefore more interested etc. An example of his wit is, Holmes chuckles heartily, Your Conversation is most entertaining said he, When you go out Close the door, for there is a decided draft. This is in response to Holmes first encounter that of which is a display of violent activity, with the villain of the Speckled Band, Dr. Roylott. It shows that when Sherlock Holmes is presented with undeniable violence, instead of retaliating in the same way, which he shows himself to be capable of; he chooses instead to use his educated wit to fight back with, but perhaps his cockiness presents a weak spot, for he seems arrogant. To me he also displays the following traits: Lonely and Manipulative Behaviour; An Outsiders Perspective; A life full Secrecy, he seems to Hold the Cards close To His Chest. These characteristics comply and interlock with Dr. Watsons, The following paragraph explains why and how their relationship has grown. As I have also mentioned in the first few paragraphs, their relationship is integrated. I see Dr. Watson, as a Simple Minded, timid and keen to learn Man; this is probably why He and Sherlock have thrived, and they both have a thirst for facts, and discoveries, and with Watson being so simple, there is no competition of egos, only teamwork. Baffled, just like the reader, Dr. Watson has to place trust in his associate, Holmes, in order to remain intact, even when persecuted by villains in the series. The villainous character in the speckled band is Dr. Roylott. His improper entrance, after being described as man of supposed murderous capability, does nothing to try and prove his innocence, it merely makes him seem to un-intelligent too of committed such a crime, as the one in the Speckled Band. His improper entrance also shows that he is controlling, and does not like to be betrayed, but this oath like behaviour, when not responded to as desired, leads him to be calculative when forced, by his inescapable greed, to kill off his step-daughters for their small fortune. He succeeds in killing one, but Helen, the remaining step-daughter notifies Sherlock Holmes, just as a whistle arouses suspicion that she may meet the same fate as her sister. This introductive description of Miss. Helen Stoner, A Lady dressed in Black, and Heavily Veiled, leads me to believe that she is in a period of mourning, due to the recent events that have torn her family apart, which of course led to her hurried arrival in London, at Sherlocks Door. It also shows that she does not want to be recognized, as I think she feels she is betraying her stepfather, Dr. Roylott, for she has doubts regarding his sanity. When describing the nature of her Stepfather, she also tells of how his behavior is somewhat confusing, for he is away for long periods of time travelling, with the gypsies that have set up a camp on the land. In Victorian times, people of his and their familys caliber were not often comfortably associated with vagabonds. However, she is putting emphasize on the gypsies, this could be an attempt to mask her own guilt, and push Sherlock onto the wrong path of enquiries. But what motive does Helen have? She described how her sister and she were very close, and how her older sister Julie, was engaged to be married shortly, and consequently marriage means having to leave the family home, and herself, alone with the psychotic step-father. This could provide enough motives to substantiate Helen being a possible murderer, for she could be framing her step-father, who she knew would be the perfect candidate for her to pin the blame upon. Another quote to describe Helen, Her face all drawn and gray, shows how her and her sister, were under a lot of physical stress, so she could easily be envious of her sister, finding love and leaving her to cope with running the household. However this theory is contradictive, when she tries hard to protect her father to begin with, when she attempts to hide her step-fathers abuse. Consequently to all of this, she could simply not desire to want to suffer the consequences for bearing a secret suspicion that he had something to do with her sisters untimely death, for as she also says, she explains his brawls with the locals, and how he can ended up in court as a result, as she feels going to Holmes is a betrayal of her family, and as I mentioned in my description of the Victorian era, family values are very important. She, all in all, is the perfect Victorian Damsel in Distress. After describing the characters, it is about time to try and explain how these characters fit together, and how the author uses them and their behaviour, through particular use of language to create tension, and add mystery. So how did the characters in the Speckled Band test the pairs friendship? And why would the author use these interlocked personalities in order to capture the readers imagination? The rather eerie Holmess behaviour can sometimes, seem to be un thought out, and dangerous to all involved, for example, when bating Dr. Roylott, he did not tell his companion what to expect, so he could of easily been caught in the midst of a snake Vs cane fight to the death. Because of the un-stuck characters behaviour the reader gels better with the loyal Dr. Holmes. This is the same for Helen Stoner, and Dr. Roylott, for she is calm, where as he acts like a brute, and is uncontrollable in his anger; so naturally the audience become to trust her, as she tries to conform to most Victorian morals. As, I just stated, his is depicted as uncontrollable in his anger, and as Helen describes, he has a rather tuned fascination for large, wild, and vicious animals, maybe he replicates these behavioural traits. For he appears a brute, with a problem communicating, as the baboon and cheetah do, as they thrive on death, but underneath it all, in a wild environment only the cunning and sly survive, and as we find out, when Dr. Roylott is found to be the murderer, we see that this was his persona after all. Helen, is the main link, between Holmes, the murderer, and the deceased, therefore she is the one in the spotlight. She raises concern, and its her life that has been affected, and is now threatened. Helen Stoner, however as the story unfolds, and more depth is added to her character regarding the stressed that she has had to bear, is it plain to see that she is not quite the typical emotionally neglected and reserved Victorian women. For she is genuinely distressed by the death of her sister, and it also comes clear that should not of killed her sister, for she did not have enough hatred to do so. She adds tension to her part of the story every well, she adds great emphasize on everything she says, and this is normal for every new victim and Villain, add more to the Holmes and Watson recipe.

Mackinders Heartland Theory

Mackinders Heartland Theory Sir Halford John Mackinder was a British geographer who wrote a paper in 1904 called The Geographical Pivot of History. Mackinders paper suggested that the control of Eastern Europe was vital to control of the world.  Mackinder postulated the following, which became known as the Heartland Theory: Who rules Eastern Europe commands the HeartlandWho rules the Heartland commands the World IslandWho rules the World Island commands the world The heartland he also referred to as the pivot area and as the core of Eurasia, and he considered all of Europe and Asia as the World Island.   In the age of modern warfare, Mackinders theory is widely considered outdated. At  the time he proposed his theory, he  took into consideration world history only in the context of conflict between land and sea powers. Nations with large navies were at an advantage over those that could not successfully navigate the oceans, Mackinder suggested. Of course, in the modern era, the use of aircraft has greatly changed the ability to control territory and provide defensive capabilities.   The Crimean War Mackinders theory was never fully proven because  no one power in history had actually controlled all three of these regions at the same time. But the Crimean War came close. During this conflict, waged from 1853 to 1856,  Russia fought for control of the Crimean Peninsula, part of Ukraine. But it lost to an allegiance of the French and British, which had more effective naval forces. Russia lost the war even though the Crimean Peninsula  is geographically closer to Moscow than to London or Paris. Possible Influence on Nazi Germany Some historians have conjectured that Mackinders theory may have influenced Nazi Germanys drive to conquer Europe (although there are many who think the eastward push of Germany that led to World War II just happened to coincide with Mackinders heartland theory). The concept of geopolitics (or geopolitik, as Germans called it) was proposed by Swedish political scientist Rudolf Kjellen in 1905. Its focus was political geography  and combined Mackinders heartland theory with Friedrich Ratzels theory on the organic nature of the state. Geopolitical theory was used to justify a countrys attempts to expand based on its own needs.   In the 1920s, German geographer Karl Haushofer used the geopolitik theory to support Germanys invasion of its neighbors, which it viewed as expansion. Haushofer posited that densely populated countries like Germany should be allowed and were entitled to expand and acquire the territory of less-populated countries. Of course, Adolf Hitler held the much worse view that Germany had some kind of moral right to acquire the lands of what he termed lesser races. But  Haushofers geopolitik theory provided support for the expansion of Hitlers Third Reich, using pseudoscience. Other Influences of Mackinders Theory Mackinders theory  also may have influenced Western powers strategic thinking during the Cold War between the Soviet Union and the  United States, as the Soviet Union had control over the former East Bloc countries.

Enterprise risk assessment, audit, and Cyberlaw policy Essay

Enterprise risk assessment, audit, and Cyberlaw policy - Essay Example the structure of any successful enterprise, the continuous data necessary exchange facilitates the efficiency of operation and enables the presence of identifiable risk factors, including the financial risk, operational risk, hazard risks, and strategic risks. The purpose of the plan is the assessment of the various risks that are associated with an interaction network which happens daily between the suppliers, investors, stakeholders, and employees while offering clear guidelines of conducting intentions to mitigate the risks. Mematech Company has consumed a lot of money, time, and human resources to ensure the security of the company is up-to –date. The company has partnered with companies like Symantec. Symantec develops industry’s security software and web security threat analysis for MemaTEch. In the report, the company outlines some of the security trends and threats and then guide on how it can be fixed and prevented. The partner also provides some practices for the company. Therefore, based on the company’s study, MemaTech has ten security practices, procedures and guidelines. The company encrypts its file systems, encrypts stored data, and encrypts the entire wire transfers. Encryption is important because it protects sensitive data and helps in preventing data loss due to equipment loss or through theft. The company also uses digital certificates to sign its sites. MemaTech saves its certificates to hardware machines like the router, or even load balancers. The company has av oided, saving the certificates on their web server and has resolved to obtain their certificate from trusted authorities only. In addition, the company has implemented auditing and DLP. The company uses data loss prevention and auditing of files in monitoring, alerting, identifying, and blocking the data flow out and into the company’s network. MemaTech has implemented are removable policy in the media. Here, the company has restricted using USB drives, thumb drives, external

Toxicity from Heavy Metals Dissertation Example | Topics and Well Written Essays - 5000 words

Toxicity from Heavy Metals - Dissertation Example Heavy metals occur naturally in the crust of the Earth. These metals depict remarkable stability, and resist any attempt at degradation or destruction. As a consequence, heavy metals accumulate in sediments and soils. Some of the heavy metals have undergone drastic change in their biochemical and geological cycles, due to human activity (Department for Environment Food and Rural Affairs, 2008). Some of the primary man – made sources of heavy metals are the mines, smelters, foundries, traffic and by products of combustion. Heavy metals that are comparatively more volatile tend to be dispersed over vast areas through the atmosphere. In several cases, such heavy metals have been deposited thousands of miles from the site of their initial release into the atmosphere (Department for Environment Food and Rural Affairs, 2008). The suspension in the atmosphere of heavy metal particles, in general, depends on their size and lightness. Thus, heavy metal particles that are larger than 10 micro meters (Â µm) in diameter settle to the ground, under the influence of gravity. This takes a few hours for completion. However, the heavy metal particles that are less than 1Â µm in diameter persist in the atmosphere for weeks. Such particles are usually removed from the atmosphere, by precipitation (Department for Environment Food and Rural Affairs, 2008). ... However, the heavy metal particles that are less than 1Â µm in diameter persist in the atmosphere for weeks. Such particles are usually removed from the atmosphere, by precipitation (Department for Environment Food and Rural Affairs, 2008). A useful definition of heavy metals is given below. Heavy metals are chemical elements that have a specific gravity that is ? 5 times the specific gravity of water. At 40C the specific gravity is deemed to be 1, by convention. As such, specific gravity is the ration of the density of a substance to the density of water (LifeExtension, 2013). Toxicity in Heavy Metals Some of the toxic metals, whose specific gravity exceeds 5 times that of water are; arsenic with a specific gravity of 5.7, cadmium with a specific gravity of 8.65, iron with a specific gravity of 7.9, lead with a specific gravity of 11.34, and mercury with a specific gravity of 13.546 (LifeExtension, 2013). Heavy metals that cannot be metabolised by the human body accumulate in the s oft tissues and become toxic. The entry of heavy metals into the human body is via air, food, water; and cutaneous absorption due to agricultural activity; exposure during manufacturing, industrial or pharmaceutical activity; or residential exposure (LifeExtension, 2013). With regard to adults, the entry of toxic heavy metals is frequently on account of industrial exposure to these substances. Among children, ingestion is the most common reason for the entry of toxic heavy metals. It has been determined that normal hand to mouth activity could lead to the development of toxic levels of heavy metals among children. The infrequent or rare routes of toxic heavy metal entry into the human body include radiological procedures, incorrect dosing or monitoring during intravenous nutrition, a

Save Our Children by Saving Their Music - Case Study of Glynn Co Research Proposal

Save Our Children by Saving Their Music - Case Study of Glynn Co School - Research Proposal Example As I am sure most board members are aware, extensive research has been done on the effects music programs and the fine arts in general have on our children’s success; especially children in low economic households where parents toil to cater for their necessities. I wish to share some of these findings with those who do not have an insight on the essence of the Fine Arts in schools, and offer a few ideas to alleviate some of the budget burdens that may have been overlooked. At the very least let’s start a meaningful conversation. It is essential that a music department be equipped with the proper elements in public relations and music education advocacy in order to gain support from administrators, parents, and the general public. The field of education requires massive support from the community, especially in the arts. Glynn Co Schools house students, teachers, and administrators, being a microcosm of the surrounding community. These schools represent the members of t he community and often give an accurate depiction of the characteristics of the area therefore if it is not an issue important enough for our administrators to get involve why should the public. Public relations are a key area in gaining the support of the general public yet when our band directors worked so diligently to secure a spot in the Cherry Blossom parade in Washington D.C., which only a few in the ENTIRE country were invited, there was barely a mention in the papers and not a word on our radio stations (Costes 52). I wonder if our young athletes worked hard enough to make the state playoffs if that would generate some buzz? Brunswick News heralding the wonders of our coaches as it called for every business to put on their signs â€Å"GO PIRATES†. Yes Pirates, go while our young musicians, who have worked so hard, stay home because no one wants to fund the bus to carry them to perform that which has so tirelessly been taught to them. Let our chorus teacher’s s pend their own money taking students home so those children, whose parents work, can stay after school to practice but let’s not give them the means to showcase the commendable job they have accomplished with these students. How about our Theater Arts teachers? How long has it been since we gave a standing ovation at a rendition of Death of Salesmen or Little Women performed by our children? I am not suggesting that our athletic departments need to be cut or imply that they are less important, only consider and weigh how many children are affected by cuts to the fine arts program verses those that are affected by cuts to the athletics department and adjust the budget accordingly. I am not just talking about the band and chorus, because it follows that I’ve got a horse in the race, I mean all of the fine arts departments. We should all be passionate about this. Think about how many of the great thinkers were and are performers in either Theater or music. Right now there are studies being done on the ill effects football has on NFL players not to mention the law suites. There are exactly ZERO studies being done on the ill effects of band, Theater, or chorus. When looking at gaining public funding and support from our businesses, the Glynn Co Board of Education must understand and indicate to the public important talent building among students and how we must ensure the survival and the success of the fine arts pro

Article Critique about information system Example | Topics and Well Written Essays - 500 words

Critique about information system - Article Example For a business entity to be successful, there are many elements that come into play. They range from political, economic, social and technological factors. LPL Financial is mostly concentrating on the latter while it has entirely neglected the other equally important elements that are classified as the macro environment. This is the wrong approach that it adopted. First of all, the company has too many advisers. 13500 advisers is a huge number for one business no matter how big it may be. The argument that may be brought forth is that the more advisers for a company the more it is likely to achieve its goals, because with many experts nothing can go wrong. However, what this business does not know is that a huge chunk of their revenue is used in servicing the salaries of these professionals. Expert advice does not come cheap and for a company that is in the process of expansion, this is a very bad move. Secondly, the company is also relying on 700 institutions’ opinions before it can make a decision. This is a clear contradiction because the business claims to be a leader in discovering new trends. Successful businesses do not rely on others, others rely on them. The business should concentrate on coming up with new inventions and the 700 institutions that it relies on will start relying on it. Being a slave for other institutions will result to bullying. Take for instance, several institutions decide to change from one line of product to another. LPL Financial will respond by restructuring its business to suit these institutions, but this is an expensive venture and may take a long time to recover the finances used. Lastly, the business has designated too much power to the employees. Allowing workers to come up with different inventions and thrive is not a bad thing, is it? The problem is the management does not come into the picture. What is their role in all these? Do they even have work? Allowing different