esterification reaction that was carried out in this lab is shown in figure 1. It worth mentioning that the by-product of such reaction is water. In organic chemistry‚ the reaction in which water molecule is released is known as condensation reaction (Hornback‚ 2006). Figure1 is drawn using Chem Sketch software. a) b) Figure 1: Typical Fischer esterification reaction (a) in comparison to the specific esterification reaction used in this lab (b) The reaction can also be categorized in terms of
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Lab 3 – Biodiversity Demonstration 1: Interdependence of Species Table 1: Interdependence of Species Results Round Species Missing (Bead Color and Name) 1 Blue / Humans 2 Red / Flowers 3 Yellow / Bees 4 N/A POST LAB QUESTIONS 1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = Without humans then all progress cease to exist and everything will go in reverse. Humans run pretty much everything and if we just eliminated humans then only
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Lab Report: Scientific Method Your Name: Alyssa Melincoff Purpose of this Lab What is the goal of this lab? What question is it trying to answer‚ or what problem is it trying to explain? To find out how table salt affects the boiling temperature of water. Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water? Adding
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GS104 Lab Report Experiment # 1 Measurement‚ Length‚ Mass‚ Volume‚ Density & Time David Case: January 17‚ 2015 Experiment #1 Measurement‚ Length‚ Mass‚ Volume‚ Density‚ & Time Objectives: To make basic distance‚ mass‚ density‚ and time measurements. To make calculations of volume and density‚ using proper units‚ and to practice using graphing software while graphing the relationship between the circumference of a circle and its diameter. Materials:
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Butane Lab Purpose The purpose of this lab is to determine the molar mass of Butane. Materials 1. funnel 2. thermometer 3. bucket 4. butane lighter 5. tap water 6. graduated cylinder 7. electronic balance Procedure 1. Rinse bucket and fill it ¾ way 2. Rinse glassware 3. Place thermometer in tray 4. Record pressure of Mercury 5. Record temperature
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Experiment 14: Preparation of 1-Bromobutane Goal: To prepare 1-Bromobutane by the SN2 reaction from 1-Butanol with Sodium Bromide and Sulfuric Acid. Mechanism: Procedure: 1. Place 27g of NaBr‚ 20mL of n-butyl alcohol‚ and 30mL of water into a 250mL round bottom flask. 2. Put the mixture in an ice-water batch and cool briefly‚ then slowly add 23 mL of conc H2SO4 while stirring with a magnetic stirrer. 3. Place a water-cooled condenser and heat the flask until the mixture boils while
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Contraction 1. As muscle fiber length increases: Contraction Force Increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: Increases. MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable is the contraction force 2. Independent Variable is the stimulation voltage 3. Controlled Variables are the muscle fiber length‚ temperature‚ freq of stimulation. Effect of Muscle Length on Contraction 1. Dependent
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Personal and Professional Development I. Professional Organizations a. IEEE Computer Society 1. dedicated to computer science and technology 2. Washington‚ DC and Southern California 3. Price of membership: $125 4. 2015 International Symposium on Engineering Secure Software and Systems 5. Magazines‚ newsletters‚ author resources‚ mobile app 6. Does the organization have a job postings page? yes 7. This organization worth the cost of membership. I would be very interested in joining this organization
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Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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Lab Analysis Questions 1. What are the important ions for most neurons when considering changes in membrane potential? (3 points) 2. What is the resting membrane potential? (3 points) 3. What does it mean that the voltage just inside the membrane is negative? (4 points) Neurophysiology of Nerve Impulses Activity 2: Receptor Potential (20 points total) Notes: • After reading the Overview and Introduction‚ Click on Experiment. • Follow the directions on the left side of the
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