Partner: Camille Dupiton Lab #1 Purification of a Solid: Crystallization and Melting Point Section: A61 Laboratory Exercise #1 Purification of a Solid: Crystallization and Melting Point Introduction In this lab exercise‚ we will be learning experimental techniques using glassware and other apparatuses. In order to successfully complete this lab‚ we will use techniques 1.0‚ 1.1‚1.2‚2.0‚2.1‚2.2‚ and 2.3 that are described in the Lab Manuel. In addition‚ we will
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AP BIOLOGY Lab 5 Cellular Respiration Objective: To calculate the rate of CR from the data. To then relate gas production to respiration rate. Then test the rate of CR in germinating versus non-germinating seeds in a controlled experiment and then test the effect of temperature on the rate of CR in the germinating versus non-germinated seeds in a controlled experiment. Analysis: 1. The CR is higher in the germinating peas in the cold water rather than in the beads or non-germinating peas
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Conclusion: The purpose of this lab was to synthesize and purify aspirin. The theoretical yield was calculated to 3.766g. The actual yield of pure aspirin was 2.863g with a yield of 76%. The percent yield indicates that our synthesis was a success but the yield is low and indicates that some of the aspirin was lost during synthesis. Some reasons for loss can result from human error such as loosing product from sticking on the spatula and the Buchner funnel and several weighings. Also‚ when transferring
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OCEAN COUNTY COLLEGE OFFICIAL COURSE DESCRIPTION DEPARTMENT OF SCIENCE AND ENGINEERING 1. Course Number and Title: CHEM-181 General Chemistry I 2. Semester Hours: 4 Contact Hours: (3 + 2) Lecture Lab 3. Catalog Description This course‚ intended for science majors‚ is the first course of a two-course sequence. Course topics include stoichiometry‚ inorganic nomenclature‚ solutions‚ gas laws‚ thermochemistry‚ atomic structure‚ and chemical bonding. The laboratory work includes
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Daphnia and Additives Lab Purpose The purpose of this lab is to test what effect of Nicotine‚ Acetylcholine‚ Epinephrine‚ Caffeine‚ and Ethanol on an organism’s heart rate. Materials * Microscope * Eye dropper * Pipet * Cotton balls * Depression slide * Beakers * Daphnia * Water * Five additives: Nicotine‚ Acetylcholine‚ Epinephrine‚ Caffeine‚ Ethanol Procedure 1. Put on safety goggles. 2. Catch a living Daphnia. 3. Transfer to a depression
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• Individual Abuse of Human by Human Ladies and gentlemen‚ a glance through the 20th century‚ astounding casualty in the Rwanda Genocide‚ lamentable mourning for those in Auschwitz Concentration Camp‚ devastating hurt on those living in the northeastern of China‚ human abuse kept torturing the innocent people‚ but pictures of the past. We evolved progressively through competition among ourselves verbally‚ physically and psychologically. However‚ it seems that we’re going far beyond the principle
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touch are scattered over the surface of your entire body‚ however those receptors are more closely grouped together in certain parts of your body. In this activity you will investigate the distribution and sensitivity of the touch receptors in the human body. Procedure 1. Obtain 8 large paperclips‚ a ruler‚ and masking tape. 2. Bend paperclip to form a “U” or “V” shape so the ends are 1/2 centimeter apart. 3. Put masking tape across the “legs” of the paperclip to maintain the end
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Earth’s Energy Budget Introduction: This Albedo lab was created to help explain the process in which the Earth reflects solar energy back to space. The fraction of radiation reflected by an object is known as an albedo. In relation to the atmosphere‚ as solar radiation reaches certain colors on the surface of Earth‚ more radiation is absorbed by darker colors‚ which in turn decreases the solar radiation that reflects back to the atmosphere. If a person was interested in learning more
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possess a selectable marker gene such as an antibiotic resistance gene. A typical DNA cloning experiment involves digesting the plasmid DNA of the vector with a particular restriction endonuclease that cuts it at only one position. Foreign DNA (e.g. human DNA) is then digested with the same restriction endonuclease. Because the plasmid and foreign DNA fragments were
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The refraction of light lab used common materials to examine the process of the refraction of light. The title of this lab is exactly what occurs throughout the four different experiments. All four parts of this lab use prior knowledge to observe the complex concept of refraction. Refraction is the bending of a light when it enters a medium where the speed of light is different. When light enters through the glass and water the speed of light becomes decreased. This is due to the density of water
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