Decantation Definition in Chemistry

In everyday life, the term decantation is usually associated with wine. Decanting is also a chemical laboratory process used to separate mixtures. In its simplest form, it just means allowing a mixture of solid and liquid or two immiscible liquids to settle and separate by gravity. This process can be slow and tedious without the aid of a centrifuge. Once the mixture components have separated, the lighter liquid is poured off, leaving the heavier liquid or solid behind. Typically, a small amount of the lighter liquid is left behind. In laboratory conditions, small volumes of mixtures are decanted in test tubes. If time is not a concern, the test tube is kept at a 45-degree angle in a test tube rack. This allows the heavier particles to slide down the side of the test tube while allowing the lighter liquid a path to rise to the top. If the test tube were held vertically, the heavier mixture component could block the test tube and not allow the lighter liquid to pass as it rises. A centrifuge can make the rate of separation go faster by simulating a great increase in the force of gravity. Some Mixtures That Can Be Decanted Oil and water: Oil floats on top of water. Decanting the mixture allows the oil to be poured off the water.Gasoline or kerosene and water:Â  This mixture is an example often cited as a safety hazard. Decanting a mixture containing flammable solvents can be dangerous, as the flammable material evaporates and forms dangerous fumes.Dirt and water:Â  Muddy water can be cleared up by decanting. The soil will sink to the bottom of the tube, allowing the clear water to be poured off.Wine:Â  Sediment from the fermentation process can produce an undesirable taste. Wine is decanted to separate the wine from these sediments.Cream and milk:Â  Cream is separated from milk by decantation. Cream rises to the top of the milk mixture and is easily skimmed off.Blood and plasma:Â  A centrifuge is necessary for this decantation. Plasma can be removed from blood by decantation.

Southwest Airlines - 833 Words

Southwest Airlines - Effective employee relations program/ Career development Southwest Airlines Southwest is a major player in the airline industry, which employs nearly 35,000 individuals. According to an article, (Hollis, 2003), Southwest Airlines has taken a different approach to building interactively relationships with the company, with employees, and with its customers to ensure the success of the business. As a result, Southwest has sustained an enhanced growth and profitability when most airlines struggle to avoid bankruptcy. Fritz Petree, Senior Manager Career Development Services, states, â€Å"Southwest philosophy is to hire for attitude and train for skill† (Hollis, 2003, p. 2). Southwest has successfully launched Virtual†¦show more content†¦What was his rationale for doing so? As stated by Steve Thomas, CEO of Pathlore Software Corp, â€Å"They’ve got a very happy employee staff, and there’s a great ability to move around and grow within the company, and they do this deliberately. They’re still profitable, a nd a lot of it has to do with their culture, and a lot of culture is driven not only by making sure that the employees are happy, but by making sure that they have the skills to do their jobs the best they can† (Hollis, 2003, p2.). Direct Energy - Compensation as it relates to the organizational strategy Direct Energy is a multi-national company with â€Å"$6 billion in annual revenue and 5,200 employees† (Hansen, 2007, p. 2). Riordan Manufacturing is also a multi-national company with 550 employees and generates revenues in excess of $1 billion (Apollo Group, 2007). Direct Energy is located in the United States and in Canada. Riordan is located in the United States and China. Both of these companies were faced with the challenge of developing compensation plans that relate to their organizational strategy. Direct Energy developed their philosophy of rewarding employees for high performance and to achieve corporate goals through the compensation program. The board of directors who designed a pay program where approval and adjustment are managed through their global compensation system accomplishes this. Direct Energy’s parent company isShow MoreRelatedSouthwest Airlines1769 Words   |  8 PagesSOUTHWEST AIRLINES CASE STUDY BY Aurelio Montelongo Jr. June 22, 2012 Southwest Airlines is in an environment whose conditions for most in this type of industry have been anything but profitable. So why is it that Southwest Airlines, who has been profitable in this volatile market been able to make money? Though Southwest did have a losing quarter it was not due to lack of fliers or its service to its customers, but an investment in its fuel hedging cost. 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Money Is the Root of All Evil Free Essays

Money is the root of all evil. Many of us grew up hearing that money is the root of all evil, but that is not really what scripture teaches us. Money is neither evil nor good. We will write a custom essay sample on Money Is the Root of All Evil or any similar topic only for you Order Now It is only what happens with money once it is in our hands that gives it qualities of either good or evil. Money can be many things, depending on how we relate to it. We need to understand the difference between a physical currency that is the basis for our lives and a material desire that is driven by greed. It is a fact that money makes the world go round and this is how we bargain for food, shelter, education, travel and just about everything in life has a price. Money is the reward for our work that allows us to enjoy the good things in life. It is the foundation for our social organizations and the donations to churches and charitable organizations that allows them to become established and function properly within our communities. From this point of view, money is not the evil; it is just a source of our survival. From the other hand, the love of money can destroys our lives. Not only money by themselves, but the desire of them. The greediness can destroy individuals, break up homes and even bring down nations. When the love of material possessions, social status and political power are the driving force behind our desire for money, we become rooted in evil. People can also make money there god. It depends on whether money is in control of the person or the person is in control of the money. It is clear, when money is in control of person it can make a lot of harm. To sum up, I should say that money is not evil, as I think. It’s just the greed that’s in the hearts of those who want it for needless riches and power that gives money the label of being evil. How to cite Money Is the Root of All Evil, Essay examples