Date: May 22‚ 2012 Name: Cristhian Valor Organic Laboratory Pre-Lab 1. Main reaction sequence including side reaction products: 2. 3 Sentence Summary of the Experiment: The OH group on the benzene ring in salicyclic acid reacts with acetic anhydride to form an ester functional group. Thus the formation of acetylsalicyclic acid (aspirin) is referred to as an esterification reaction‚ which requires the presence of H+ (H2SO4 in our case). The technique used to purify the aspirin content
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Sean Dowling Julia Phaltankar Mrs. Oakes Chemistry w/ Algebra 10/G February 18‚ 2015 Determining Empirical Formula Lab Introduction: One can find an empirical formula by taking a sample of a compound and dividing the number of moles of one element in the compound by the number of moles of another element in the compound to form a small wholenumber formula. For example‚ in a sample of a made up compound of oxygen and lead‚ one mole of lead has a molar mass of 207.2 g/mole‚ and oxygen
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Pre lab assessment questions Student’s name: Stephanie Jones Student ID number: s5054629 1. Dependent and Independent Variables Check your understanding of the experimental method by identifying the independent variable (IV) and dependent variable (DV) in the following investigations. 1a. Autonomic Nervous System Experiment in Week 3 Tutorials IV (name the two levels): Thought type (neutral and negative) DV (and how was it operationalised?): Arousal‚ measured by heart rate (BPM) Once you
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r Virtual Lab: Enzyme Controlled Reactions Instructions 1. Go to the following web-link in order to open the Virtual Lab: http://www.mhhe.com/biosci/genbio/virtual_labs_2K8/labs/BL_02/index.html 2. Open the Virtual Lab: Enzyme Controlled Reactions 3. The virtual lab simulation will be on the right side of the screen‚ and the “Question” column will be on the left side of the screen. 4. Click the monitor in the lab simulation to watch a video about enzyme action. 5. Click the “Information”
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Chapter 2 Assignment Ryan M. Kethcart INFOST-491 SEC-OL Exercises 1. Consider the statement: an individual threat agent‚ like a hacker‚ can be a factor in more than one threat category. If a hacker hacks into a network‚ copies a few files‚ defaces the Web page‚ and steals credit card numbers‚ how many different threat categories does this attack fall into? a. Overall‚ I believe this attack falls into four major threat categories: deliberate acts of trespass‚ compromises to intellectual
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BUSI 400 July 20th‚ 2013 Exercise 1 Page 22 Questions 24‚ 25‚ 28‚ 30 and 37 24: Strategic Management is often referred to as the capstone course in business administration because it provides a way of “formulating‚ implementing‚ and evaluating cross-functional decisions that enable an organization to achieve its objectives.” This type of management requires skill and critical thinking in all aspects of the business to create a plan that will make the company prosper in the overall
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| |Temperatures | Light Intensity |Initial |Dark |100% |65% |25% |10% |2% | |Trials |1 |1 |1 |1 |1 |1 |1 | | Dependent Variable: Primary Productivity (Gross and Net in mg/L) Constants: Source of lake water‚ amount of lake water‚ pH of lake water‚ water sampling bottles‚ plastic window screens Abstract
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Majed Al Dhwaihi Chem 151 Lab Prelab Assignment for week 3 Chemical Separation Procedure: Separating the sample: First place a small amount of the spinach provided in the mortar‚ just enough to cover its bottom; combined with the sand provided to break down the call walls. A 1:1 mixture of hexane and acetone was determined to best solvent for this extraction. Knowing this add one mL of the pure hexane and one mL of the pure acetone to the mortar. Grind the contents until the cell walls
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Date: November 5‚ 2014 Section: 113 R- 8AM Experiment 8 Determination of Percent Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions Objectives: The lab experiment will consist of oxidation-reduction and double displacement reactions as well as titration techniques. All these components will be used in order to determine the percent composition of pennies. In conducting redox and double displacement
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Solvent/Water Trap Diagram Rodney Atwaters Halle Bair May 28‚ 2013 Chemistry 36100 Introduction The purpose of this lab was to produce benzoic acid by mixing sodium benzoate with hydrochloric acid. The Hydrochloric acid used in the experiment was a stock solution made by mixing HCl Acid and deionized water. HCl acid‚ historically called‚ muriatic acid or spirits of salt‚ hydrochloric acid is produced from sulfuric acid and common salt‚ NaCl (Princeton.edu). Since the early 1900 ’s‚ sodium
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