Voltaic Cell Lab Report Essay Example

Voltaic Cell Lab Report Paper Voltaic cell is a device in which a redo reaction spontaneously occurs and produces an electric current. In order for the transfer of electrons in a redo reaction to produce an electric current and be useful, the electrons are made to pass through an external electrically conducting wire instead of being directly transferred between the oxidation and reducing agents. A salt bridge must be used to avoid popularization of the electrodes by facilitating the circulation of ions from electrolyte. Each electrode is connected to the voltmeter by clips and wires. The voltmeter measures the voltage generated by the redo reaction. The voltage reading will be positive when the electrodes are connected properly for spontaneous reaction. A redo reaction occurs when the species with higher reduction potential is connected as the cathode. Research Question: What is the effect Of different concentration Of negative terminal electrolyte on the potential difference in voltaic cell? Hypothesis: The lower the concentration of negative terminal electrolyte, the higher the potential difference in voltaic cell. Variables: Manipulated variable Concentration of negative terminal electrolyte * Use zinc sulfate solution, Azans as the negative terminal electrolyte throughout the experiment * Use zinc sulfate solution, Azans of different concentration, 1. MM, 0. MM, 0. MM and 0. MM Measure egg, g, jug and 0. Egg of zinc sulfate powder then mix in distilled water respectively until all the salt are completely dissolves then pour the solution into volumetric flask and add water until it make up to scum. We will write a custom essay sample on Voltaic Cell Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Voltaic Cell Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Voltaic Cell Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer I Responding variable Potential difference Measure the potential difference with a voltmeter Take readings of potential preference when using different concentration of zinc sulfate solution, Azans Fixed variable I Type of electrode ;k use two electrodes of different type, copper and zinc * use electrodes of the same size, CM x electromotive terminal electrolyte ;k use copper (II) sulfate solution, Cuscus as the positive terminal electrolyte * use the same concentration Of I . CM copper (II) sulfate solution, Cuscus throughout the experimenter of salt bridge * use the same type of salt bridge, Nanny throughout the experiment. Apparatus: * mall beaker * looms beaker * ml beaker Voltmeter * Connecting wires mall measuring cylinder * Electronic balance Glass rod * mall volumetric flask ;k Meter rule * Scissors Materials: ;k Copper (II) sulfate powder * Zinc sulfate powder ;k Sodium nitrate powder * Cotton string ;k 0. Mm copper sheet * O_urn zinc sheet ;k Paper towel Diagram: Copper (II) sulfate solution, Cuscus CM x LLC copper sheet electrode CM x LLC zinc sheet electrode Cotton string soaked with sodium nitrate, Nanny Zinc sulfate solution, Azans Scm x LLC copper sheet electrode Scm x LLC zinc sheet electrode Procedure: Preparation of zinc sulfate solution I. Weight out 40. COg, 4. COg, 0. BOB and 0. 048 of zinc sulfate powder then dissolve the powder into distilled water in ml beaker respectively. 2. Pour the zinc sulfate solution into Simi volumetric flask separately and label it. 3. Add distilled water into each volumetric flask until it makes up to mall. 4. Mix the solution well in each volumetric flask. Preparation Of salt bridge 5. Weight out egg of sodium nitrate powder then dissolves the powder into distilled water in Some beaker.

Tulsa Race Riots essays

Tulsa Race Riots essays World Book Encyclopedia conspicuously fails to mention the Tulsa Race Riot of 1921 in any of its entries; readers wont find it under Oklahoma, Tulsa, or riots (Black Wall Street). It did happen, though. For many victims, the Tulsa Race Riot is very much a reality still today. Their lives were forever changed on May 31, 1921. On this day, 19-year-old black man, Dick Rowland, was arrested and accused of trying to rape a white female elevator operator, Sarah Page, in Tulsas Drexel Building. The local newspaper, the Tulsa Tribune, reporting on the story, inflamed area residents by declaring that Rowland had attacked Page and torn her clothes. On the back page, the Tribune carried an editorial with the headline, To Lynch Negro Tonight, in which it talked about the fact that mobs of Whites were forming in order to lynch the Negro (Carrillo). White men soon began showing up outside the courthouse carrying guns and drinking liquor and demanding that Rowland be handed over. But local African American World War I veterans had weapons of their own, and they came to protect Rowland. After a single gun fired inadvertently, riot ensued. Thousands of Whites raided the 35-square block Greenwood district of Tulsa, looting and destroying over 1200 homes, 35 grocery stores, eight doctors offices, and five hotels. Different accounts estimate the number of lives lost anywhere between 300 and 3000, with property damages estimating $1.8 million in 1921- a sum that would amount to over $16 million today (Carrillo). The Tulsa Race Riot was many things. It was Yellow Journalism at its worst. It was mob mentality at its strongest. And it was the reaction of a jealous white population to the extremely affluent Black Wall Street, as it was called. Was it terrorism, though? That is an issue of literary particularities and little else...

Drug and Alcohol Abuse on the Police Force Essay

Drug and Alcohol Abuse on the Police Force - Essay Example d other drugs to some extent, the greatest reason being on-the-job stress – they consume them as a way of helping them deal with the stress that is related to being on their kind of job (occupational stress) (Hensaw, Murphy & Morse, 10). Genovese and Genovese who also support this point indicate that there exists a strong sub-cultural more amongst police officers, which encourages drinking both for stress-reduction as well as social purposes. In Iraqi, where addiction has increased in the course of three decades of economic hardship and war, the year 2010 saw an increase in the numbers of members of the security force who became reliant on drugs or alcohol. This raised concerns regarding a considerable problem of addiction among the armed services of this country as the insurgency continued being a strong force and as American troops prepared to depart towards the end of last year. Military and police officials in Iraqi confess that in some parts of Iraq, as many as 50% of their colleagues use drugs or alcohol while on duty. These include high-ranking officers. There is no way of knowing the correct number of the members of the security force who are dependent on drug and alcohol. However, interviews with scores of health officials, police officers, soldiers, drug dealers, pharmacists and political leaders in the country reveal that drug and alcohol abuse among the military, police and security force has become progressi vely more common and seems to have grown considerably. Although those who confess to using alcohol and drugs while on duty admit that they cause erratic behavior, they state that working at checkpoints for long hours, perpetual fear and observing the horrible deaths of their colleagues make the use of alcohol and drugs less an option than a necessity. Some senior Iraqi army and police officers declared that they were reluctant to take punitive action against drug abusers because they were usually among their most courageous fighters (Williams &

Exam Coursework Example | Topics and Well Written Essays - 500 words

Exam - Coursework Example It’s not mentioned whether the printer supports Wi-Fi or not so we are going to assume that printer supports Wi-Fi printing so we wont need any extra hardware for printer as well. Now we will assume that Louise have three children as well as office at the home so definitely he won’t be needing disturbance in his office at the time of working so he will have a house of minimum three floor which in hardware terms increase our one more need of wireless switch with boosters in order to increase wireless signal strength on other floors. In Software terms we will be needing only Child locks for Louis children in order they dont accidentally land on sites which they are not supposed to visit. Remaining software needs like protecting wireless network by locking it with password and making it compatible for only 9 systems can be done from the settings of the wireless router. So For Wireless Router we will just need is one Ethernet cable to connect Broadband modem with the Wireless Router thats all because everything else will be connected to the wireless router using wireless connection. So in order to protect such use of their internet they will have to lock the security with using any password which is difficult for others to guess other than family members, as well as they can specify the MAC address of all 9 systems in the Router settings and bar any other service requests other than these 9 systems/devices. 2) PII is an Information about a person that recognizes, links, relates, or is exclusive to, or describes him or her, e.g. a passport number; age, police rank, civilian, marital status, race, salary, mobile numbers. Social engineering- is an act of manipulating people into performing actions or divulging information, rather than by breaking in or using technical cracking techniques e.g. via email, phone, dumpster diving, online, reverse, USB

Modern Public Health emphasises the importance of public involvement Essay

Modern Public Health emphasises the importance of public involvement. Critically and creatively analyse relevant literature to explain ways in which practitione - Essay Example Institute for Health Research â€Å"which aims to promote and support active public involvement in NHS, public health and social care research.† The group believes Specific organization†(Department of Health, 2006). Because people are involved in making decisions about their own health care and that of those they are close to, practitioners can be instrumental in identifying the needs of the public in which it serves. Goals of the new system are to develop a â€Å"health and social care system planned around the needs of individual people and those of the community,† create services that are â€Å" flexible, responsive, open to challenge, accountable to communities and constantly open to improvement,† and lastly, â€Å"assign decision making to the local level†(DH, 2006). Practitioners should encourage and collaborate with educators locally to provide health topic information to the youngest of the public population who will one day become the leaders and major influence in the lives of others. Even at the youngest levels, children are capable of absorbing and processing large amounts of information. One forum or place for health services that is becoming increasingly common is the workplace. The public is generally aware of job stress, health and safety risks and general employment practices that are unhealthy. Practitioners can also encourage local employers to become involved in the health education process, as an integral part of the particular workplace. Practitioners can then make recommendations for changes in processes or policies that encourage better physical and mental health, fewer workplace injuries and less time taken from work. Practitioners should be open to workplace complaints that those they serve provide. They can become advocates by addressing such diagnostic tools developed to assist them. This is a great way to influence the public and involve them in decision making processes. Allowing residents of a particular geographic area to

The Introduction Of Chinese Food Cultural Studies Essay

The Introduction Of Chinese Food Cultural Studies Essay Chinese cuisine has a long history, famous all over the world. Chinese cuisine has developed and matured over the centuries, forming a rich cultural content It is characterized by fine selection of ingredients, precise processing, particular care to the amount of fire, and substantial nourishment. Local flavors and snacks, and special dishes have formed according to regions, local products, climate, historical factors, and eating habits.  The development and diversity of the delights of Chinese cuisine are also representative of Chinas long history. With each dynasty new recipes were created until the art of food preparation reach its peak during the Qing Dynasty (1644 1911). The dinner called Man Han Quan Xi that incorporates all the very best of Man and Han Cuisine is held in high esteem involving as it does countless dishes, each with its own distinctive flavor and appeal. This veritable banquet in its preparation and presentation typifies all of the culture and culinary arts t hat have been perfected over centuries and is a comprehensive amalgam of taste, instruments, and manners.   It also has their own flavor and appeal in our ethnic groups, which is quite distinctive. China has local cuisine, imperial dishes, and dishes of ethnic minorities, Islamic dishes with a strong religious flavor and vegetarian dishes. At the beginning China had only four styles of cuisine. As a sort of traditional food in China, wonton   originated in North China. It was viewed by ancient Chinese as a sealed stuffed bun without holes and therefore was named Huidun (meaning chaos). It was later called wonton in line with the formation rule of Chinese characters. Wonton has a long history. There existed numerous wonton restaurants in cities in the Tang and Song Dynasties. Wonton was featured by clear soup and delicate stuffing at that time. Its fineness was ever appraised by poets and was hard to achieve by common people. In ancient times, it was a custom in some regions to eat wonton on the midwinter day, which is said to has bearing on a famous doctor Zhang Zhongjing. He ever stuffed wonton with medicinal materials on the midwinter day to cure villagers who suffered frostbite. Wanton mee is very famous in many countries, such as Hong Kong, Malaysia, Singapore, Thailand, and so on. In Hong Kong, wonton noodles are usually served in steaming hot soup with shrimp wontons and garnished with leafy vegetables. There are plenty of variations of this popular Cantonese dish, with different toppings and garnishes. For example the soup and wontons in a separate bowl, the noodles being served relatively dry, with the toppings and garnishes, dressed with sauce, dipping the noodles in the soup to eat it. Malaysia offers different versions of the dish, with different states having different versions of the dish and there are versions from  Johor,  Pahang,  Perak, Penang,  Sarawak, and  Selangor. The Malaysian version differs from the original in having slices of  char siu  added to the dish, as well as the possibility of the soup and wontons in a separate bowl, the noodles being served relatively dry and dressed with  oyster sauce. The  Singapore  ver sion of  wanton noodle  is largely similar to the Malaysian version. Wonton noodles  are also very popular in  Thailand, where, as in Malaysia and Singapore, the dish is often ordered together with barbecued pork which is then called  bami mu daeng kiao   Bakkwa  is a  Chinese  salty-sweet  dried meat  product similar to  jerky, made in the form of flat thin sheets. It is normally made from  pork. Bakkwa is believed to have originated from a meat preservation and preparation technique used in ancient  China  that is still practiced in places with  Hokkien  influence. In  Malaysia,  Singapore, and the  Philippines  bakkwa  or  bagua  is the most widely used name. Cantonese speakers use the term  yuhk gÃ…Â n, Anglicised version  long yok, while in  China  and  Taiwan  the product is more commonly known as  rougan. Commercially available versions are sometimes labeled as barbecued pork, dried pork, or pork jerky. Bakkwa is particularly popular as a  snack  in  Macau,  Malaysia,  Singapore,  Taiwan  and the  Philippines. In Taiwan, it is regarded as one of the three pork delicacies. In Malaysia and Singapore, bakkwa has become a highly popular gift offered to visitors and acquaintances, as well as amongst corporate employees (some during the  Chinese New Year). In Muslim-majority countries like Malaysia,  halal  chicken varieties of the snack may be used as a gift substitute. It may also be served in functions such as  Chinese wedding  banquets and religious ceremony dinners. While demand is particularly high during the festive seasons, it is also served throughout the year in various outlets as takeaway snacks or to be served together with main courses at home. The meat is commonly sold in red-colored bags or packaging, an auspicious color in  Chinese culture. In this question, students will learned more about the Chinese food and get more cookings knowledge. Such as the ingredients that can make the tasty Chinese foods. Students also can make it while at home, increasing the cookings skill if could. Especially the students can continue to learning the Chineses cuisine, such as the ingredients to cooking the Chinese food, traditional cooking, provisions, rations, cuisine, and so on. Thats exceptionally effective for those students who expecting to working in Food and Beverage department, Kitchen department, or open a business for selling the Chineses traditional food. What is Chinese set? The history of Chinese cuisine in China traced back to Peking Man and his use of fire and the invention of cuisine some 400,000 years ago. Some other accounts of the history of Chinese cuisine takes the beginning to the Chinese stone age, where the cultivation of rice and the production of noodles, both typical representations of Chinese cuisine as it is known today, are understood from archaeological findings. Not long after the expansion of the Chinese Empire during the Qin Dynasty and Han Dynasty, Chinese writers noted the great differences in culinary practices among people from different parts of the realm. These differences followed to a great extent the varying climate and availability of foodstuffs in China. Different ethnic groups might occupy only small areas, but early on, their cuisines were included in systematic lists of Chinese cuisines. Most Chinese cuisines belong to one of the Four Schools: Lu, Yang (named after Jiangsus major style, Huaiyang cu isine), Chuan and Yue. These are often translated as the cuisines of Shandong, Sichuan, Jiangsu and Guangdong. Table setting refers to the way to set a table with tableware-such as eating utensils and dishware-for serving and eating. The arrangement for a single diner is called a place setting. The table should have a centerpiece that performs a solely decorative function. If an informal dinner is being served that will fill the available places at the table, care should be taken to make the centerpiece not too large so that there will be sufficient room to place serving dishes. Informal settings generally have fewer utensils and dishes but use a stereotyped layout based on more formal settings. Utensils are arranged in the order and the way a person will use them. Usually in Western culture, that means that the forks, bread plate, spreader, and napkin are to the left, while knives, spoons, drink ware, cups, and saucers are to the right, although the left-right order is reversed in a minority of countries. The most formal dinner is served from the kitchen. When the meal is served, in addition to the place plate at each setting there is the roll, the napkin, and the following cutlery/silver: knives, spoons where applicable, to the right and forks to the left. Coffee is served in Butler Service style in demitasse and spoons are placed on the saucer to the right of each handle. The utensils at a formal dinner must be sterling silver. Serving dishes and utensils are not placed on the table for a formal dinner. The only exception to these general rules is the protocol followed at the Spanish royal court, which was also adopted by the Habsburg court: accordingly all utensils were placed on the right. At a less formal dinner, not served from the kitchen, the dessert fork and spoon can be set above the plate, fork pointing right, to match the other forks, spoon pointing left. There are a variety of configurations of cutlery on the market but are usually in groups of four groups of eight, but some are in groups of twelve. Most of the cutlery set is a set of five panel members, consisting of a salad fork, fork, a spoon, a spoon and a knife from the table. Appliance parts can have a spoonful of sugar, butter knife and serving well. Some cutlery sets simply consists of kitchen knives, where you have five kitchen knives, a sharpening or butcher and a wooden block bearings, which are the essential dignity. You can put a pair of kitchen scissors and will. At the upper end of these groups, some very used include various Diameter as the chefs knife, paring knife, bread knife, utility knife (for cutting vegetables, fruits and other questions a day) and maybe a knife or scissors. Students can learn about the Chineses table setting, and the menus about the Chineses cuisine that have to showing to customer. That is a useful and a knowledgeable for the hospitality students because Chineses cuisine having a lot of knowledgeable to let the students discovered. Moreover, we can learned how to making the Chineses menu if the students can imagine to open a big dining restaurant for serving the Chineses food by the Chineses table setting.

Sustainable Development Essay -- Environmental Issues

Upton’s premise is a mix-use development providing the full range of dwelling types supported by economic opportunity and social infrastructure. The site was assembled through English partnerships, which were granted outline planning permission for Upton in 1997 (Community and Local Government 2007). The scheme aims to deliver 1,382 homes by its completion in 2013 (Clark 2010). Engaging the community was an important aspect of the schemes development process. In 2001, English Partnerships (EP) collaborated with Northampton Borough Council, the Prince’s Foundation and EDAW, an urban design consultancy, to establish the Upton Working Group to implement the Upton project. Several revised additions of the Upton Urban Framework Plan followed through ‘Enquiry by Design’ for the period of 2001-2002, in late 2002 Northampton Borough Council granted planning consent for the new framework (Street 2006). The multi-faceted characteristics of high-quality urban extensions are detailed in the Sustainable Urban Extensions: Planned through Design report from the Princes Foundation, focusing particularly on the quality of new housing. Paraphrased below are the proposed requirements to create a successful development indicated by the report: Here the report identifies the physical attributes of an urban extension, focussing on quality of new housing. Higher density, a mix of housing types and tenures, legible neighbourhoods, communal areas including green space and communal amenities and facilities are all observed as necessary. However, due to adverse effects of the economic downturn, Upton is yet to provide the substantial amenities as originally proposed. Consequently, residents of Upton will require transportation to obtain essential serv... ... the primary mode of movement and as a result reducing their dependence on cars. Currently streets and buildings are orientated to maximise natural lighting in buildings whilst increasing the proficiency of rooftop photovoltaic cells. Additionally, attempts have been made to ensure a strong sense of place and community identity is incorporated as a parallel to the wider sustainability strategy. The Upton Design code established and set out the standard requirements and development framework on the site. Furthermore the design code commenced open dialogue between developers and their design groups and the Upton Working Group, essentially establishing a co-operative and creative partnership. Nonetheless, building character is determined by individual developers and architects (CABE 2011), and these houses comprise of various consciously-predetermined styles.