Design Experiment Percentage Yield of Calcium Carbonate and HCl I. Background Information When marble chips and hydrochloric acid are added together‚ they form sodium chloride‚ water‚ and carbon dioxide. This reaction can be displayed by the balanced equation below; CaCO3 (s) + HCl (l) NaCl(s) + H2O(l) + CO2 (g) As the carbon dioxide is formed‚ it will leave the open beaker as a gas. This will result in a loss of mass. The mass change can then be used to find the percentage yield of the
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This experiment tested the growth of E.coli with inserted plasmid on an agar plate with Ampicillin. One colony of E.coli resistant to Ampicillin was grown during this experiment. The overall goal of the experiment was to successfully grow E.coli on the agar plate‚ which would show that the plasmid had been effectively inserted into the bacteria’s genes. This experiment helped students understand how plasmids were inserted into bacteria and used in real life situations. It also showed how the bacteria’s
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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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Integrated Physics and Chemistry – Unit 2: The Structure of Matter Experiment: Atomic Structure In this experiment‚ you will have a chance to test the hypothesis that Ernest Rutherford used when determining the size of the nucleus. In his "gold foil experiment‚" Rutherford shot alpha particles at gold atoms. Once he realized that the alpha particles were hitting a concentrated positive mass‚ he developed the nuclear model of the atom. Next‚ he set out to determine the relative size of the nucleus
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What Types of Physical Benefits Can Be Obtained From Bowling? by Liza Blau‚ Demand Media Bowling has one of the longest and richest histories of all sports‚ dating back approximately 4‚000 years ago to Greece and Rome. If you love to play the game‚ you’re not alone. According to The Bowling Foundation‚ more than 25 percent of Americans bowl each year‚ making it the nation’s largest participation sport. Today‚ bowling is a $4 billion industry with nearly 3‚000 bowling centers in the United States
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When performing this experiment make sure all materials are present this includes: Blood Pressure Probe‚ a Sphygmomanometer‚ computer with Logger Pro software‚ Stethoscope‚ Logger Pro cables‚ and a timer if you so chose. Using the Blood Pressure Probes‚ Logger Pro cable‚ and the software you are ready to begin the experiment. Have a scary video pulled up from youtube that is within the time limit of 0-120 seconds. It would be wise to have the video around 60 seconds because that is the time frame
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Pearson Biology Textbook coloured pencils Skeletons‚ photographs of a number of vertebrates copy of student worksheet Method: 1 Examine each of the vertebrate specimens in turn. Using Figure 1 as a guide‚ locate and identify the bones making up the pentadactyl limb structure. 2 Make a labelled sketch in your workbook of the forelimbs of two specimens. 3 Describe the differences you see in the two sketches. 4 Complete the missing labels from the lizard skeleton 5 Using coloured pencils
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Experiment 5 Polytropic Expansion of Air Object The object of this experiment is to find the relation between pressure and volume for the expansion of air in a pressure vessel – this expansion is a thermodynamic process. Introduction The expansion or compression of a gas can be described by the polytropic relation ‚ where p is pressure‚ v is specific volume‚ c is a constant and the exponent n depends on the thermodynamic process. In our experiment compressed air in a steel
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Title Experiment with a spiral spring (Oscillation) Objective 1. To show how the time of vertical oscillation depends on the load 2. To determine the spring constant 3. To determine the effective mass of the spring Introduction In this experiment‚ it is to show how the time of vertical oscillation depends on the load‚ to determine the spring constant and to determine the effective mass of the spring. An ideal spring is remarkable in the sense that
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DETERMINE THE COMPARATIVE REACTIVITY OF METALS? 2 BACKGROUND 2 Electrolytic and Galvanic corrosion: 3 AIM 5 HYPOTHESIS 6 VARIABLES 6 APPARTATUS 7 DIAGRAM 8 METHOD / PROCEDURE 8 RESULTS 11 Tables 11 Graphing 13 DISCUSSION 14 Graph 1 / 2(Volume of Hydrogen Produced): 14 CONCLUSION 16 EVALUATION 17 Strengths 17 Weaknesses and Improvements: 17 COULD ELECTROLYSIS BE USED TO DETERMINE THE COMPARATIVE REACTIVITY OF METALS?
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