beaker and the water 5. Then we determined the actual volume of water by using the mass of water in the beaker‚ table densities‚ and the equation: volume equals mass over density. 6. We then calculated and recorded the absolute error and percent error for each volume. Part 3: Calibration of Pipet 1. Obtained a beaker and measures its mass. 2. Draw a sample of water into the pipet above the calibration
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Key facts Copper pharmaceuticals‚ Inc were a major manufacturer for prescription drugs for medical and dental professions. Sales are done mainly with the detailers who were pharmacy school graduates and had couple years of experience as registered pharmacists in drugstores. Bob Marsh‚ with CPI for 12 years‚ married and had two children Marsh’s initial salary was $35‚000 and been raised to over $60‚000 throughout his time with CPI Marsh has 6 different field supervisor throughout the
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Lab report is one way we used during of after an experiment in a laboratory to subtly record and discuss the experiment. During a lab‚ we sometimes can observe only the physical part of the experiment‚ or may be some visible chemical changes. These changes indicate that the experiment we do is successful or not. However‚ in order to understand and achieve more from just simply doing the experiment‚ we write lab report to more profoundly understand the internal meanings of the experiment we do‚ and
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1. Aldol Condensation Revised Procedure http://www.xula.edu/chemistry/documents/orgleclab/23Aldol.pdf 2. Aldol Condensation Notes http://www.xula.edu/chemistry/documents/orgleclab/Aldol_notes.pdf Data and Observations: Volume of Ethanol: 4.1 mL Volume of NaOH: 4.2 mL Volume of Benzaldehyde: 2.0 mL Total Crude Mass: 3.082g Total Recrystallized Product Mass: 0.863g Crude Percent Yield: 67% Recrystallized Percent Yield: 18.7% Crude Melting Point Range: 53°-96°C Recrystallized
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OF EXPERIMENT The purpose of this lab was to determine the magnitude of the uncertainties produced when making measurements using common lab equipment. II.APPARATUS AND MATERIALS NEEDED safety goggles distilled water (at 20°C) laboratory apron dropper laboratory balance 2 objects of unknown mass standard masses graduated cylinder‚ 10-mL graduated cylinder‚ 100-mL III.PROCEDURE Part A: Estimating the Uncertainty of a Balance 1.We put on lab aprons and goggles. Then‚ we used the
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Name: Aaron Banks Section: Thursday PRELAB: A MODEL FOR CIRCUITS I: ELECTRIC CURRENT 1. What do you predict for the rankings of the brightness of bulbs A‚ B‚ and C in Figure 2-1? A>B>C A being the brightest 2. How do you predict that changing the direction of the current by reversing the connections to the battery in Figure 2-1 would change the rankings in (1)? I don’t think it will change at all. The brightness should be the same in diagram b and diagram a it should also stay
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AP Chemistry Lab 2: Analysis of Alum Lab Objective: In this lab we will analyze alum by two techniques in order to verify its identity. The melting point and the mole ratio of hydrated water to anhydrous aluminum potassium sulfate will be determined. Lab Procedure: 1. Use a mortar and pestle to crush alum. 2. Pack the alum in capillary tube‚ and then fasten it to the thermometer. 3. Fasten the thermometer to the ring stand. 4. Immerse the bottom of the
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Criteria 6 8 10 Title Your lab report has a Title that is directly related to the lab experiment/ exercise. Your group or class must be able to come up with your own title You must make your own title based on scientific theory Aim You have clearly stated your aim Your aim is relevant and informative You must make your own aim based on scientific theory Background background information relevant to the lab experiment/ exercise You must be able to link your aim to the background The
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The average University student has many tasks to accomplish and much studying to do while combating the onslaught of sleep. Students at the University of the West Indies Mona are no different and recommended amongst themselves a highly rated and popular health supplement “Yeast-Vite” [8]. Yeast-Vite is a health supplement pill which helps people fight fatigue and improve alertness. The active ingredients in Yeast-Vite are caffeine‚ vitamin B1‚ vitamin B2‚ vitamin B3. The other ingredients are:
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AP Chemistry Kinetics Lab Abstract: The purpose of this lab is to learn how to write law expressions‚ determine orders by graphs‚ and calculate rate constants. By determining the number of drops of sodium hypochlorite necessary to make a diluted food dye change to colorless in less than three minutes helps calculate the absorbance which can then be analyzed to find the pseudo rate constant and eventually leading to the rate constant and the rate law. The results show that the m and n are both 1st
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