Periodic Table Essay Example | Topics and Well Written Essays - 750 words

Periodic Table - Essay Example Mercury is one of the noble metals. It appears near the bottom of the activity series and is very inactive. It is not affected by oxygen of the air at ordinary temperatures, but if heated to about 300oC it slowly combines with oxygen to form mercury (II) oxide. It does not dissolve in the monoxidizing acids, but dissolves readily in nitric acid to form mercury (II) nitrate (King, Caldwell and Williams 604).. Mercury was known to the ancient Chinese and Hindus and has been found in 3500 year old Egyptian tombs. Mercury is not usually found free in nature and is primarily obtained from the mineral cinnabar (HgS). Spain and Italy produce about half of the world's supply of Mercury (Gagnon). The element mercury is a metal which is liquid at room temperature. Mercury is a bit like lead but it's liquid. You can hold it in your hand. Heavy (density 13.6), in fact so heavy that objects such as bricks, cannonballs, and lumps of lead or iron will float in Mercury. Gold doesn't float in mercury - it behaves more like sugar in tea! Mercury does not stick to magnets, so if it gets into your carpets or under your floorboards it will be a long-term problem. Mercury vapour makes nice bright lights but is not for breathing. The highly reflective surface of the Mercury makes it the stuff of mirrors. It's also used for thermometers, barometers, electrical devices, etc. However the problem is the cumulative poisonous nature. In the pure metal form it's relatively inert, so not so deadly, but in compounds such as mercuric chloride. Mercury is a liquid it is not wet. It has a negative coefficient of surface tension, which means that the meniscus on the surface is the other way up from no rmal, or to put it another way it does not soak into material but more runs off in the style of "water off a duck's back (The Element Mercury). Mercury vapor and its salts are poisonous, though the free metal may be taken internally under certain conditions. Because of its relatively low boiling point (629.88 K or 356.73oC or 674.11oF) and hence volatile in nature, free mercury should never be allowed to stand in an open container in the laboratory. Evidence shows that inhalation of its vapors is injurious (King et al. 605). When it comes to versatility, mercury is number one. It has many used for today's common man and mad scientist. Being the only metal which is liquid at room temperature mercury has some specialist uses: It is used in thermometers because it has a large thermal expansion which is constant over a large temperature range although it is being phased out in favour of safer liquids. It is also used in barometers and manometers due to its high density. From this it has also become a way of measuring pressure in millimetres of mercury. Mercury can be used to make thermometers, barometers and other scientific instruments. Mercury conducts electricity and is used to make silent, position dependent switches. Mercury vapor is used in streetlights, fluorescent lamps and advertising signs. Mercury is also a good thermal conductor, making it an excellent shield and coolant in nuclear reactors. Mercury vapor is used instead of steam in the boilers of some turbine (Encyclopedia Britannica). Mercury easily forms alloys with other metals, such as gold, silver, zinc and cadmium. These alloys are called amalgams. Amalgams are used to help extract gold from its ores. Some mercury is used in the preparati on of dental amalgams of silver and gold for filling

Orgnazational citizenship behavior( carrefour china) Essay

Orgnazational citizenship behavior( carrefour china) - Essay Example Although the Carrefour Foundation did succeed in taking humanitarian initiatives, yet it lacked involvement of the company’s own employees in its efforts. Therefore, the Board of Directors took measures to increase employees’ participation. Food program, professional integration and solidarity were the three core areas at which the Carrefour Foundation specifically focused. Carrefour primarily sells food and grocery products. The Carrefour Foundation has developed links between people and farmers for provision of healthy food. The employees of Carrefour established an organic pepper industry in Shuiruo and Saba and taught the farmers ways to implant certified organic Sichuan peppers. The employees also delivered lectures on personal hygiene to improve health and safety condition in the very villages. In 4 years, Carrefour has contributed up to â‚ ¬90,000 for the program. Fair trade is encouraged by purchasing significant portion of the total crops every year above ma rket value. Carrefour buys the products from farmers and then sells them over in 22 different countries. The foundation has also opened a school for the community and has improved the infrastructure. The program has helped raise the income of farmers, improved their living conditions in general, and has promoted social solidarity (carrefour.com).

Leadership and entrepreneurship Essay Example | Topics and Well Written Essays - 2250 words

Leadership and entrepreneurship - Essay Example Most of the basic organizational problems such as distorted structural design, poor morale of managers and employees, communication gaps, resistance to change, inefficient controls, iniquitous salary structure, scarcity of resources, incompatibility with external environment and so on are attributed to poor leadership. Entrepreneurship on the hand, which is derived from the French word â€Å"entrprende†, as defined by the famous economist Adam Smith as, â€Å"the economic agents who transform demand into supply for profits†. One of the definitions of the term, includes, the founding of an enterprise which apparently includes all those associated with it such as the decision makers, the stakeholders and the initiators of business or a business idea. In conclusion, entrepreneurs are leaders who develop and grow enterprises. (Stephen Robins, 2004) Bill Gates or McDonald could well be considered as entrepreneurs due to their sheer vision and dedication of converting a business idea into a profitable and economically viable business option. The size of the business rarely affects the leadership qualities. For example, a leader of a national or international enterprise / organization, commands wide – spread influence over a large number of people while the influence of the leader of a small work group in an organization is relatively limited in scope. However this does not affect the fact that they leaders in their own right and fulfill all the duties and responsibilities of an entrepreneur. In a formal organizational setting, a leader enjoys a position of command and exercise power over their subordinates in order to get the work done and achieve the entrepreneurial goals laid down by the organization. The larger the group the greater the difficulties in exercising control over their subordinates. In such a situation, the leadership roles are often distributed among the subordinates, chosen

Case Study in Managerial Accounting Essay Example | Topics and Well Written Essays - 250 words

Case Study in Managerial Accounting - Essay Example The cost endor being placed at $5.50 is referred to as the variable cost since it is believed to be the market cost though it tends to vary depending on the market situations. The $5.75 is referred to as the period cost since used for accounting purposes to record the actual expense to be incurred when the product is purchased The $14,000 that Alderon received from Solo Industries is referred to as fixed price that Solo Industries fixed for the tatooine. The $20,000 that Alderon paid is referred to as the product cost since Aalderon actually incurred the cost and it was used for accounting purposes.10If the tatooine was purchased today by Alderon, then it would cost $11.00 which is therefore referred to as the market price. The $1,000 is referred to as indirect labor cost as the price cannot be directly traced back to the product. The $10,000 that would have been a donation of each of the 10 percent viewers of the wildlife show is an opportunity cost as the best forgone alternative. The $5000 is referred to as the outlay cost as it would be the future cash flow. The $25,000 is the revenue cost likely to be collected once the wildlife show is sold to another television show. The wildlife show has a smaller viewing percentage but have high income of $10000Ãâ€"10=$100,000 as compared to the manufacturing show with a big viewing percentage but low income of $5000Ãâ€"15=$75000. It is therefore of significance to show wildlife as opposed to manufacturing

Journal 10 Essay Example | Topics and Well Written Essays - 500 words

Journal 10 - Essay Example However, Berniece had her reasons for opposing this sale, as the piano is the only piece of heirloom, which they both inherited. Piano was close to her heart because her great grandparents engraved their history on it, they were traded for it and also their father died over it (74-75, Bogumil). She declines Willie’s idea to sell it because piano was a reminder of their ancestors and especially of their father. And selling it would mean they would be selling their identity and heritage; this time by them self. Wilson weaved death and suffering with the piano and the siblings inherited both. Piano reminded them of their loss and deficient identity, but also was the only heirloom (though painful) left of the family. Boy Willie and Berniece’s great grandparents (slaves) engraved their history on it, but since it was not their property (Sutter’s) they were traded over it. Their father died after taking it from Sutter’s residence and piano was the last thing Berniece could relate to. However, she never played on it since it used to make her sad and Willie wanted to sell this heritage because it existed on the life (sacrifice) of his family and has been a reminder of slavery. Wilson has depicted music worth dying for and this is evident in the play. I would like to hire Will Smith as Boy Willie and Halle Berry as Berniece because both actors can convincingly transform them self into the assigned characters and can do justice with their characters. If it’s a theatrical play I would like to transform the stage into 1930 era, when the transition (from slavery to a free nation) was taking place for African Americans. My characters will dress up according to the 1930’s dressing criteria and the Piano will be staged in the front corner so its existence can be noticed. From time to time, I would like the piano to be played by the good

Organizational Issues Essay Example | Topics and Well Written Essays - 500 words - 1

Organizational Issues - Essay Example The company gives a provision for daycare where children are kept safe when their guardians are away to school or work. The company acts as a custodian of the community’s interest and profits. The external pressure has not entirely had an effect on the organizational ethics of the company. The external pressure would have informed the organization’s leader to opt to research employees with potential. A good number of organizations need to know the entire background of workers to avoid unnecessary turnarounds by the employees. The Greyston’s hiring process is a thing many firms have considered outdated. External pressures have transformed the ethics somehow in another way. The organization concentrates highly on community of its origin. The community does have problems with assistance provided where it is needed much by the company. The community members have faced problems in the past and have no variety of options where they can choose from mainly in the market of jobs. Moreover, the community do not enjoy from the option of daycare either. The company has made it possible for the children to be taken care of in educational facilities that are safe. The issues are associated to personal and organizational decisions as they are role models. The company illustrates to the workers on how they are supposed to live in the community. The firm gives the employees second chances despite of the problems they might have caused in the past. By doing this the company tries to show the community that one should always be given a second chance to correct the situation. The company also provides education and daycares portraying social responsibility. The company aids the community in educating and taking care of the children. All this is an example to the society on how they should live. Greyston Bakery always has a slogan that gives an inspiration. It states that a company is bounded

Winter the worst season of the year Essay Example | Topics and Well Written Essays - 750 words

Winter the worst season of the year - Essay Example I imagine cold weather, blizzards, and total lack of pleasant outdoor activities. Winter in New York can be really challenging with snow storms and severe weather conditions. Not to mention that very often snow can block traffic, create havoc, and even cut communication utilities In this cases winter can be indeed the worse season of the year. For me, I can say that this is so, because I can not stay outdoors for a long time and do my regular activities due to the incredibly cold atmospheric conditions. Then I find it extremely depressing to see grey colors all around, occasionally some while spots of snow here and there. Finally, to add to the lower spirits is the extreme weather which makes me worry about family and friends, who might be stuck and in trouble in unreachable places.Scientists always recommend prolonged outdoor activities, in order to keep one's body and spirit in good shape. There are numberless winter sports practiced in the open air, however, for me exposing my bod y to harsh temperatures and having numb limbs is not the ideal situation. Going to the gym is also acceptable, but then you have to walk back home exposed to the cold wind, after you have taken a shower, so one can catch cold or flu. Winter can be very unexpected and bring unconditional weather, which can lock you at home for days. In such cases I become languid and my mood is down. I am not able to go outside and enjoy the terrific sunshine and fresh smell of grass. I once read an article about the effects of colors and how they can influence people's moods and emotions. Although, the white color - I may say the symbol of winter, speaks about purity, I associate it also with paleness and death. Besides the white, the predominant color of winter is grey. This leads to down spirits and lack to motivation either to work or to study. The greyness carries with it depression and uncomfortable emotions. That is why for me winter is the worst season. Finally, the extreme weather conditions that we witness in New York make me anxious about my family, relatives and friends, who in occasions might get stuck in snow-drifts and get into trouble. In such harsh weather communication systems are also cut down, and we can not connect with them at all. Consequently, people panic and think that the worst has happened. Winter is unpredictable with its severity and forces me to see that sometimes nature is bigger than human actions and activities and even though we have skyscrapers and telecommunications, austere weather conditions can ruin them. For me winter is the worst season of the year, because it shows how unpleasant nature can be. It can form blizzards and leave people in hazardous situations. They are unable to practice their outdoor activities and have all reasons to worry about their families in a cold winter day. The grey surrounding dominates the color nuance and establishes a deep feeling of helplessness and anxiety. That is why winter is the worst season for me. Winter is also the worst season, because it causes many car accidents. Commuters who use the public transport do not need to worry much. However, people who work in New York and drive from New Jersey can encounter dangerous, slippery roads during the winter. Although the government spends a lot of money to secure the proper highway maintenance during the winter, weather conditions can be so severe that they can impede all efforts done. Another reason why I think that winter is the worst season is because people are exposed to freezing. Applying moisturizing creams helps us a little when handling the cold, however, if the temperatures drop really below the freezing point, people can experience serious limbs infections