"How do you tell if a pure substance is a compound or an element" Essays and Research Papers

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    Compound Light Microscope The familiar compound light microscope is a series of lenses (hence "compound") that focus visible light in such a way as to produce a magnified image. A single lens‚ often called a magnifying glass‚ cannot generally magnify images as much as a series of lenses although Antony van Leeuwenhoek‚ the first microbiologist‚ used a simple‚ albeit exquisitely crafted‚ lens to discover single-celled "animalcules‚" as he called them. Advantages: Basic compound light microscopes

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    What are Corporate Financial Statements (Report and Accounts) good for and what do they not tell you? Introduction Accounting unlike finance is generally related to standard and rules ‚ its main goals are to record ‚ report and audit the accounting records of an organization. The science of accounting is precise and structured and touches such subjects as journal entries ‚ invoicing ‚ taxes ‚ quarterly or annual financial reports . It is structured ‚ precise and relatively easy calculated with

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    Substance abuse

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    Substance Abuse Smoking HCA 250 March 15‚ 2013 Robbie Johnson Substance Abuse Smoking Smoking is a form of nicotine dependence that many of us rely on for various reasons. Every person smokes for a reason whether it is peer pressure in high school‚ parents smoking‚ friends‚ co workers. People want to fit into the in crowd some have started and want to quit or have tried multiple times and have not succeeded. The withdrawal symptoms can include irritability‚ anxiety‚ difficulty concentrating

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    Why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding? 1 (2) Why does a tetrahedral complex of the type [MA2 B2] not show geometrical isomerism? 1 (3) How do you account for the miscibility of ethoxyethane with water. 1 (4) Give the IUPAC name of the organic compound 1 O II (CH3)2 C CH C CH3 = − − (5) Name the monomers of nylon 2 or nylon 6 ploymer. 1 (6) Give one example of an artificial sweetener used by the diabetic patients. 1 (7) Direct nitration

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    Separation and Purification of Organic Compounds Sunshine Marie Introduction Each year‚ many thousands of new or unknown organic compounds are prepared or extracted from natural sources such as plants‚ fungi and animals. In order to identify an unknown organic compound or the components of a mixture of organic compounds‚ it is necessary firstly to separate and purify the compounds. At any given temperature‚ a certain number of molecules of a substance in the liquid state have sufficient energy

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    How lucky you are

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    How Lucky You Are Maybe you think your life sucks‚ but if you look at the bigger picture maybe you should be grateful? The story takes place in London and we are in modern day. We meet our main character Max who is bulking from school taking all for granted. At first we are on the bus with Max where he meets Ishraqi who is an Iranian trying to immigrate to England. Together they decide that Max can give Ishraqi a little guided tour in London‚ but this is interrupted when Ishraqi must go to

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    Write a 300 word summary of what you will do as a professional teacher. How do you think professionalism may impact on your teaching? What are the characteristics of professionalism and what sort of professional knowledge should you possess “Write a 300 word summary of what you will do as a professional teacher. How do you think professionalism may impact on your teaching? What are the characteristics of professionalism and what sort of professional knowledge should you possess?” As a professional

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    Do You Believe in Ghosts?

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    Do you believe in ghosts? Ghosts‚ a hypothetical subject widely opened to the skepticism of us humans. In reference to Wikipedia‚ the definition of ghosts is “a ghost is the soul or spirit of a deceased person or animal that can appear‚ in visible form or other manifestation‚ to the living.” In my opinion‚ ghosts do exist. Of course they do. The existence of ghosts can be proved by unexplainable paranormal activities. Nevertheless‚ they have a strong connection with religions‚ explaining the

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    How Do You Think It Makes Your Mother Feel Having a comfortable conversation with family is a good way to be a harmonious family. Have you ever tried to communicate with your family? In the article‚ "How Do You Think It Makes Your Mother Feel"‚ the author‚ James Frey is having a conversation with his family and therapist because he has a problem with drugs. The reason why they called a therapist is that James’ parents want to figure out what is happening to James and are trying to help him. Some

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    Do You Believe in Magic?

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    Do You Believe in Magic? It was the night we had all waited for‚ the night that was to bring 15 years of a magical journey to an end. As my friends and I walked into the movie theater‚ we were immediately surrounded by people dressed as witches and wizards‚ snitches and half-giants. We continued to retrieve our tickets and walk toward our respective theater‚ passing movie posters declaring‚ “It all ends here”. For the generation that has grown up with Harry‚ Ron and Hermione‚ the premiere of

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