Copper Cycle Lab Essay Example for Free

Copper Cycle Lab Essay Purpose: During this experiment, we were trying to see whether copper, after a chain of chemical reactions, will revert back to its elemental form. Procedure: First, I added nitric acid with copper in a beaker, which turned into a copper nitrate, a blue-green solution. Afterwards, I added sodium hydroxide, and my solution colored to a dark blue solution called copper hydroxide. I heated the solution to evaporate the water and I got a brownish-blackish solid called copper oxide. Once the solid appeared, I poured in sulfuric acid to it and I got copper sulfate, a bluish solution. The final step I took was to add the element zinc, which turned the solution from blue to clear, with a brown solid in the bottom of the beaker, copper. Observation: During each step, something happened. For instant, for the first step, when I added the acid to the copper, the copper disappeared and the solution turned from the clear acid color to a blue-greenish hue. In the next step, there was another chemical reaction when I added the sodium hydroxide. The whole solution turned blue when I stirred the mixture. When the time came to evaporate the solution, the liquids disappeared, leaving behind a wet, brownish solid in the middle of the beaker. When the solid was hot, it bubbled and popped until it cooled down. When all the liquids evaporated, I scraped off the solid and put it in a separate beaker. Once I put the sulfuric acid in it, the brown solids (copper oxide) slowly dissolved and turned the acid into blue. After the acid was blue, I added the metal/grey colored zinc into the solution; the solution bubbled and the zinc turned the solution clear. The zinc disappeared and in its place, copper appeared. Analysis: For each step, there was a chemical reaction, except for the part where we evaporated the water/liquefied chemicals. For each step, I was turning the copper into a compound. When an acid was added to the copper, it turned the element into a compound. When a base was added later, it merely replaced the acid with the base. Conclusion: For this experiment, I can conclude that an element/matter can never be destroyed or created. The copper cycle is evidence for the Law of Conservation of Mass, which states that an element or matter can never be created or destroyed, only changed.

The Freedom of Information Essay -- Technology Computers Essays

The Freedom of Information There are different kinds of freedoms: freedom of expression, of opinion, of speech, of information, to copy, to own and to read, and freedom from interference and observation. This research is an ethical analysis of the freedom of information in the new Internet era and how the new technology should be implemented globally as a universal human right. Not so many years ago, I still remember in High School my research with books, magazines, and newspapers as the only resources to get information. When I did my undergraduate thesis in Direct Reduced Iron, I could get information thanks to my brother in law directly from the company that owns the technology. It is not possible to get all the information that you want from the Internet, because some are confidential documents or data with personal information, but there are people that find ways to access information illegally that is not open to the general public. These people called Hackers are not acting morally, because they are not respecting the people’s rights of privacy. This case is not included in the freedom of information mentioned in this research, but the issue itself is affecting in some way the freedom of information. Global Information Infrastructure Something that brought my attention to this subject was the speech of the Vice President Al Gore in 1994 at the International Telecommunications Union Conference about his determination for the creation of a network of networks to all members of our societies and his ethical analysis in Global Information Infrastructure (GII). The plan was based on five principles: Encourage private investment Promote competition Create a flexible regulatory framework Provide open access to the network Ensure universal service Now in 2003 we can see the tremend us benefits of GII in all the countries where it has been implemented. When I started to do this research I didn’t realize all the advances in communications this commitment made. Most of these advances were in the telecommunications industry with private investments and free competition in an industry that was in the past a monopoly. Each country has their own laws in telecommunications, and it is a universal right from an ethical point of view that each individual around the world has to have some kind of access to get information. Let’s say a li... ...f the person is literate or illiterate. Endnotes [1] Deborah G. Johnson and Helen Nissenbaum, Computers, Ethics & Social Values (New Jersey: Prentice-Hall, Inc., 1995), 621. [2] John Weckert and Douglas Adeney, Computer and Information Ethics (Westport: Greenwood Publishing Group, Inc., 1997), 32. [3] Johnson and Nissenbaum, 622. [4] â€Å"Motivating a Human Rights Perspective on Access to Cyberspace: The Human Right to Communicate†. CPSR Newsletter Vol. 18, Number 3.6 June2003 http://www.cpsr.org/publications/newsletter/issues/2000/Summer2000/mciver.html [5] Richard A. Spinello, Case Studies in Information and Computer Ethics (New Jersey: Prentice-Hall, Inc., 1997), 249. Bibliography Hester, D. Micah, and Paul J. Ford. Computers and Ethics in the Cyberage. Prentice-Hall, Inc., 2001. Johnson, Deborah G. Computer Ethics. Prentice-Hall, Inc., 1985. Johnson, Deborah G. and Helen Nissenbaum. Computers, Ethics & Social Values. Prentice-Hall, Inc., 1995. Spinello, Richard A. Case Studies in Information and Computer Ethics. Prentice-Hall, Inc., 1997. Weckert, John and Douglas Adeney. Computer and Information Ethics. Greenwood Publishing Group, Inc., 1997.

Research Success Assignment Essay

Leon’s furniture is ranked number two hundred and ten on the globe and mail’s report on business top 1000, earning a profit of $56,666. The focus of this report will be on the financial position of Leon’s furniture. For any business, the financial position of the company will be viewed by both internal and external users and stakeholders because it shows how well the business is doing financially. The net income of the company will affect the financial position of the business because based on the profit or loss incurred, it will define if the business is successful or not. Moreover, shareholders will be interested in the financial statements since it determines the earnings per share. The first article is â€Å"Leon’s EPS falls 18.8% in Q2† which reports about the financial situation of Leon’s and briefly explained the causes of the fall. Judging from the title of the article, it is obvious that it will impact Leon’s furniture in a ne gative fashion. Sales are decreased from $11.2 million to $9 million between 2011 and 2012 (Knell). This suggests that net income and earnings per share has dropped significantly. It is reported that the decrease in sales is due to the continuation of waning customer confidence, decrease in housing starts, and continued high customer debt (Knell). Customer confidence plays a great part when customers are debating on whether they should purchase the furniture or not. Since the world is still recovering from the economic crisis years ago, the higher unemployment rates and lower GDPs will create less customer confidence when a decision needs to be made. Hence, they are less likely to purchase the products. The start of a decrease in housing means that less houses are being built compared to before. Moreover, less new home owners will shop at furniture stores like Leon’s furniture. In addition, high consumer debt nowadays is another reason why there’s a reduction in customer spending. â€Å"Also, affecting probability in the second quarter were marketing expenses.† (Knell) Since Leon’s have been opening new stores, the occupancy costs are increased by $1.2 million. These increases and decreases in numbers will ultimately reduce the sales volume and result in a decrease in net income. â€Å"Leon’s earning decline 15% in third quarter† is another article that reports a negative impact relating to their financial position. Similar to the earnings declined in the second quarter, the third quarter of the year is still a tough period for Leon’s. They claim that this is due to the increase in operating costs in a time of flat sales growth (Knell). The newly renovated stores in Sault. Ste. Marie and Sudbury, Ontario are opened in the thir d quarter of 2012 and will further increase the operating cost. Financially, this means that Leon’s is continuing to expand and opening new store and increasing its operating expenses, but the market is only providing them will a flat growth rate of sales. If the sales volume remains unchanged and operating costs continues to grow, the amount of the money earned will logically start to decrease. â€Å"The company said its growth margin fell 1.5 points to 40.9% mainly because a weakening Canadian dollar hiked the cost of imported product† (Knell). This means that more Canadian dollars are needed to buy the foreign products that used less Canadian dollars to buy years ago. This effects the financial position because more assets are used to import foreign products. Lastly, the third article is called â€Å"Leon’s to acquire The Brick†. As the title suggests Leon’s will buyout The Brick and will merge the two companies in one. This can have both positive and negative impacts for Leon’s financially. â€Å"The transaction, valued at about C$700 million, is expected to close in the first quarter.† (Knell) This can be considered a negative impact for the company financially since an enormous amount of money is needed for the buyout. Using large amount of money to buy out The Brick can affect several things. The asset will decrease (if they borough money from banks, it will increase their liabilities and they must pay for the interest) and also effect the asset-liability ratio, making the company owe more than they own. In addition, the executive chairman of The Brick is anticipated to join Leon’s board of directors (Knell). Like any other new coworkers that come to the company, they might encounter arguments or disagreements. However, if both companies work together in a positive manner, they may earn more net income combined. Hence, this will turn the negative into a positive impact for both companies. â€Å"Leon’s corporate and franchise stores had combined sales of C$879.6 million and The Brick had corporate and franchise sales of C1.54 billion† (Knell). This shows that the sales volume of The Brick is actually greater than its new owner, Leon’s. This can impact Leon’s in a positive way because the revenue from The Brick will be added onto their own revenue since they are now a combined company. The most important thing to take into consideration is that buying out The Brick, Leon’s will have one less competitor in the furniture industry. All of the above will lead to increase in total revenue and net income for Leon’s furniture. Since I am currently studying Accounting and Finance at Seneca College, I believe that my future profession in accounting can help Leon’s keep track of their transactions and create accurate and reliable financial statements. These statements will show all the inflow and outflow of capitals going in and out of the company. By looking at the financial statements, I can then analyze on how to make the company more profitable using the accounting skills that I am learning at school.

The Middle East

Mesencephalon (Midbrain) Function and Structures

The mesencephalon or midbrain is the portion of the brainstem that connects the hindbrain and the forebrain. A number of nerve tracts run through the midbrain that connect the cerebrum with the cerebellum and other hindbrain structures. A major function of the midbrain is to aid in movement as well as visual and auditory processing. Damage to certain areas of the mesencephalon have been linked to the development of Parkinsons disease. Function: Functions of the mesencephalon include: Controlling Responses to SightEye MovementPupil DilationRegulate Muscle MovementHearing Location: The mesencephalon is the most rostral portion of the brainstem. It is located between the forebrain and the hindbrain. Structures: A number of structures are located in the mesencephalon including the tectum, tegmentum, cerebral peduncle, substantia nigra, crus cerebri, and cranial nerves (oculomotor and trochlear). The tectum consists of rounded bulges called colliculi that are involved in vision and hearing processes. The cerebral peduncle is a bundle of nerve fibers that connect the forebrain and hindbrain. The  cerebral peduncle includes the tegementum (forms the base of the midbrain) and the crus cerebri (nerve tracts that that connect the cerebrum with the cerebellum). The substantia nigra has nerve connections with the frontal lobes and other areas of the brain involved in motor function. Cells in the substantia nigra also produce dopamine, a chemical messenger that helps to coordinate muscle movement. Disease: Neurodegeneration of nerve cells in the substantia nigra results in a drop off of dopamine production. Significant loss in dopamine levels (60-80%) may result in the development of Parkinsons disease. Parkinsons disease is a nervous system disorder that results in the loss of motor control and coordination. Symptoms include tremors, slowness of movement, muscle stiffness, and trouble with balance. More Mesencephalon Information: Grays Anatomy: Midbrain Divisions of the Brain Forebrain - encompasses the cerebral cortex and brain lobes.Midbrain - connects the forebrain to the hindbrain.Hindbrain - regulates autonomic functions and coordinates movement.

The Problem Of Dealing With Biased Decision Making

Employers regularly use job interviews as an integral part of the organization’s selection and recruitment processes, yet when meeting someone for the first time, our initial judgments are often clouded by biases (Rockawin, 2012). The following essay will explore the problem of dealing with biased decision-making in job interviews which is defined as the cognitive biases which are flaws in judgments that occurs in particular situations as a result of flawed perception of incoming information. (Hua, 2011). The â€Å"employment interview is a social interaction where the interviewer and applicant exchange and process the information gathered from each other† (Macan, 2009) and due to this, biased decision-making is a significant problem because people often make decisions based on information and advice from outside sources (Luan, Sorkin, Itzkowitz, 2004). Poor hiring decisions may occur if decision-makers allow these biases to affect their impartial, professional judgment s that could result in negative implications to the organisation (OPP, n.d.). The essay will propose two recommendations or interventions will be aimed at resolving this problem. The benefits and risks associated with each intervention will also be addressed. When strangers meet they are likely to form a reaction or deduce who they are with very limited information. This same situation can apply to both the interviewer and the interviewee when they meet for the first time in the job interview. Interviewers mayShow MoreRelatedEssay about Meanings of Intelligence and Adaptive Behavior1355 Words   |  6 Pagesknows and where they have deficits. One problem with assessing students with ID is the identification and classification of ID is that they differ greatly between states and is often inconsistent. 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Guns N’ Roses Chinese ­Democracy free essay sample

It took over 14 years for  ­Ã¢â‚¬Å"Chinese Democracy,† the much-anticipated Guns N Roses album, to be publicly  ­released. There were a lot of things for singer Axl Rose to take care of as the sole original member of the band, but he took a mighty long time to make one measly album. Was it worth the wait? Its overdramatic, its overly ambitious, and over one hour long, but excess of this sort is expected from the band that caused riots and controversy while other ?s era â€Å"rock† bands teased their hair and  ­applied their makeup. GNRs first album, â€Å"Appetite for Destruction† is considered one of the greatest of its time. Raw aggression pounds out in every note. Their 1991 releases, â€Å"Use Your Illusion I† and â€Å"II† include several sweet love songs like â€Å"Dont Cry† and â€Å"November Rain† that show musical maturity. Nevertheless, GNR was still the meanest rock band in the country. We will write a custom essay sample on Guns N’ Roses: Chinese  ­Democracy or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page â€Å"Chinese Democracy,† to put it plainly, sucks. It sounds like Rose couldnt make up his mind about what kind of record he wanted to make, so he threw together a colorful array of genres. â€Å"Shacklers Revenge† is pure heavy metal, a head-bangers anthem. And the next track, â€Å"Better,† is pop, with several corny melodies. When the album takes a sharp turn from pop to Broadway-rock in â€Å"This I Love,† theres only one logical conclusion for listeners: â€Å"I guess Axl really is bipolar.† They say a singer will find only one guitarist he has perfect musical chemistry with in his lifetime. Slash, the original GNR lead guitarist, was Axls musical soul mate. He put as much expression into his licks as Rose did in his trademark vocal flourishes – which, on a side note, are missing from this album. In the old GNR, every solo fit the mood of the song, emotion poured out of every bend and pull-off. Izzy Stradlin, the original rhythm guitar ist, dueled harmoniously with his awesome riffs and progressions. Most of the solos on this new album dont have Slash and Stradlins passion, partly because Rose couldnt even manage to keep a consistent lineup during the recording. Granted, â€Å"Sorry† has an extremely fitting guitar solo. It also has relevant lyrics that relate to the less-than-flattering image of Rose the media has created. However, once the song kicks into the chorus, it takes a turn for the worse. Roses voice sounds jaded, and the bizarre use of vibrato makes him come across like a bitter old man. Tracks four through six are basically the same, with a lot of piano and Rose singing like Justin Timberlake trying to be rock n roll. However, â€Å"I.R.S.† shows that Rose still has the ability to write butt-kicking rock tunes. The song is reminiscent of â€Å"Appetite for Destruction,† complete with gritty instrumentals and a flawless display of Axls vocal range. But no one should suffer through the endless drone that is the rest of the album. How â€Å"Chinese Democracy† ended up such a failure is a mystery when it had so much potential. But maybe its too early to put GNR in the ground. I guess well see in another 14 years.