Silver Mirror Experiment Background: This experiment was first conducted by Bernhard Tollens‚ it is used to determine whether a carbonyl containing compound is an aldehyde or a ketone. An aldehyde is a compound containing a formyl group (CHO).The experiment involves diamminesilver complex and a chemical reagent (also known as “Tollens’ reagent”) which in this case is glucose. In a successful experiment a reflective silver metal should precipitate‚ with characteristics identical to that of a mirror’
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Introduction: The purpose of this experiment was to see how exercising for a minimum of thirty minutes a day for at least four days a week altered vital capacity in people. Exercising for this amount was chosen to be studied because there have been many who have benefited from more exercise. The question to be answered was if this amount of exercise increased or decreased vital capacity. The hypothesis was vital capacity will increase in response to exercising for a minimum of thirty minutes a day
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Becca DeHaven ChemC-125 Avogadro’s Law Experiment Report Introduction: The following experiment’s purpose was to confirm Avogadro’s Law and experimentally determine the Universal Gas Constant “R”. Amedeo Avogadro hypothesized that all gases of equal volume‚ temperature and pressure would contain equal amounts of moles. This idea that volume is directly proportional to moles sprung from other similar hypotheses. Robert Boyle found that pressure and volume are inversely proportional‚ meaning as pressure
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EXPERIMENT 1 “HOW DO I LOVE THEE LET ME COUNT THE WAYS...” DETERMINATION OF AVOGADRO’S CONSTANT Techniques Calibration drop counting MSDS available for • • stearic acid‚ CH3(CH2)16COOH cyclohexane‚ C6H12 Principles molar volume molecular structures surface areas and volumes Avogadro’s constant percent error Recommended Advanced Reading Chapter 3 in Petrucci‚ Herring‚ Madura‚ & Bissonnette’s General Chemistry‚10th Ed. Avogadro Constant...1 INTRODUCTION
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was going at a high speed when it reached the peak of its bounce it is hard to measure how high the ball had bounced on sight alone. Parallax errors were hard to avoid during this experiment as each bounce was a different height and the camera moved during filming. To improve the reliability of results the experiments could be filmed with high speed video camera which would capture more shots per second than an ordinary camera‚ allowing the footage to be analysed down to the most accurate shot taken
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The celery is still very green. It is also The carrot is well structured‚ moist and smooth. before strong‚ rigid and firm. The celery If you bend it it will snap clean in half. The water experiment is in the isotonic solution. is clear in beaker B ( fresh water) and beaker A (saltwater) is
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of this experiment was to figure out if the temperature of the reaction would rise‚ will the absorption rise as well. Reactions use energy‚ If there is energy than heat occurs. The Hypothesis that was figured out was‚ If the temperature rises‚ then the absorption will also go up. The Independent variable that was tested was temperature. The dependent variable that was being tested was color and absorption. The data was calculated by a spectrophotometer. The control group of this experiment was room
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STANFORD PRISON EXPERIMENT One of the most interesting studies made in history was led by Philip Zimbardo‚ a psychologist and a former classmate of Stanley Milgram (who was famous for his Milgram experiment). He sought to expand on Milgram’s experiment about impacts of situational variables on human behavior by simulating a prison environment‚ in which volunteering students were randomly assigned as prisoners or prison guards. Many controversies have been elicited from this experiment‚ and it was with
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Aim: This is the reason for doing the experiment. It may contain a research question‚ but it must state what it is that we are investigating or what we hope to find out. Hypothesis: This is the basis behind your plan which leads you to believe that the experiment can be successfully carried out. It may also contain a prediction of the final answer (supported by a reason) Method: This is what was actually done or is going to be done. It may need a diagram‚ in which case it should be drawn
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Heinrich Himmler at the concentration camp‚ Auschwitz. Himmler was a leading member of the Nazi party. Mengele made the decision and chose who would be executed in gas chambers. In addition‚ he led Nazi Medical Experiments on inmates. Mengele’s most sickening experiment was the experiment on the twins. Mengele studied the secrets of heredity. He figured if Aryan women can give birth to twins‚ the future will be saved. Since Nazi leaders wanted only blue eyed and blonde hair children‚ it was logical
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