Organic Lab 2 February 14‚ 2009 Experiment 4: Borohydride Reduction of 2-Methylcyclohexanone Introduction: When learning about reduction reactions‚ we know that the addition of nucleophilic hydride anion (H-) to the carbonyl group will in turn result in the reduction of aldehydes to primary alcohols. Borohydride‚ and Lithuim aluminum hydride are commonly used as reducing agents. We can note that both of these reagents have a (H-) anion‚ hence it will be a powerful base and also take the
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Bottled Water and the Environment Bottled water has become an important aspect of human lives. For some of us‚ it’s important to the point where we can say “I can’t live without bottled water!”. This is mainly because of its convenience and the idea of bottled water being more “healthy” than tap water. Bottled water may be easily accessible and maybe even tastier than tap water‚ but is it better for ourselves and the environment in the long run? The consumption of bottled water has increased tremendously
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leadership was a positive influence towards the racial disputes and segregation laws‚ African American soldiers fighting in the United States military would be awarded and later well decorated with medals of French and American bravery‚ Jim Crow Laws and what they ment to the racist southern states of the U.S. In the novel To Kill a Mockingbird by Harper Lee‚ racism is the next basic thing to breathing air‚ everyone there is a somewhat racist‚ almost everyone‚
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EXPERIMENT 2 Measurement of g: Use of a simple pendulum OBJECTIVE: To measure the acceleration due to gravity using a simple pendulum. Textbook reference: pp10-15 INTRODUCTION: Many things in nature wiggle in a periodic fashion. That is‚ they vibrate. One such example is a simple pendulum. If we suspend a mass at the end of a piece of string‚ we have a simple pendulum. Here‚ the to and fro motion represents a periodic motion used in times past to control the motion of grandfather and cuckoo
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black men and was intended to last six months. Shamefully‚ the ethics of this experiment were nonexistent as misinformation and deception led the experiment to last a striking forty years. A primary object for the disgust surrounding the experiment was the lack of consent. Currently‚ the Institutional Review Board (IRB) requires informed consent from participants in any research study (p. 50‚ 42). Although the IRB did not exist until the 1970s‚ after the conclusion of the Tuskegee Syphilis Study
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Water Pollution Water – The Elixir of Life Can you imagine life without water? Take a minute and think about it. We need water for all our daily essential activities – drinking‚ bathing‚ cleaning… In fact‚ every living thing on this planet needs water Water pollution And what do we do with this vital resource? We take its all important ability – we all know that water can dissolve many of the thing that we dump in it – to make it a giant rubbish bin. In fact‚ we even throw things
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The aim of this experiment was to determine if the heart and breathing rate will increase during exercise. It was hypothesised that if the amount of exercise (independent variable) increases‚ then the individual’s heart rate (bpm) and breathing rate (breaths-pm) (dependant variables) will increase when the environment in which the exercise is completed and a consistent and appropriate method of measurement for the dependant variables are kept constant. It was hypothesised that if physical exercise
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Unit 2 Home Labs - KEY Goals: Read Safety Perform Changes: Physical or Chemical Lab Perform Special Physical Properties of Matter Lab Perform Paper Chromatography Lab Turn-in: 1) Changes: Physical or Chemical Lab - Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 2) Special Physical Properties of Matter Lab – Completed Procedure / Observations‚ questions
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heat capacity of the constructed calorimeter. The third and fourth goal was to determine what reactions were to be investigated and what variations of the reactions would be studied. The two requirements that were kept in mind while creating the calorimeter were that it should be a good insulator‚ meaning that it does not allow for the transfer of heat between two systems in an environment‚ and that it should have the lowest heat capacity possible (ideally 0C) so that the calorimeter absorbs as little
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Warrior Women? A group of Women warriors thought to have settled around the Black Sea. Who mated with vanquished foes and only kept the female children they bore. 2. Where are references to the Amazons found? The first account was found in Homer’s ILIAD‚ an account of the Trojan War. Greek historian Herodotus talked about a group of women warriors in his writing around 5th or 6th century B.C. 3. What evidence is there that the Amazons may have existed in real life? The first evidence of women warriors
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