Chromatography Lab Questions Pre-Lab Questions 1. A pencil is used rather than a pen to mark the “starting line” in step two because a pen or marker while be used to place a small dot of ink in the center of the X that is made with a pencil. 2. Capillary action is filling of pores in a solid with a liquid. Capillary action is caused by spotting or absorption and is allowed to seep or flow through. 3. The type of pen that will probably give better separation in this paper chromatography
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Lab 9 Working with Printers Exercise 9.1 Installing a Printer Overview Contoso‚ Ltd. has just taken delivery of several new printers that the IT director purchased through an auction. He has assigned you the task of installing the printers and making them available to the users of the company network. For the first printer‚ you intend to connect the unit directly to an LPT port in the Windows 7 computer that will function as the print server. In Exercise 9.1‚ you install the driver for the printer
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Over the last several years‚ state and local governments have been firing shots across the bow of the Interactive Video Game Industry‚ seeking to constrain increasingly graphic and violent content found in current interactive games. The federal government has now jumped into the fray‚ with proposed legislation seeking to punish the marketing of violent media to children. With the cyber-world of Internet role-playing games about to explode‚ increasing pressure will be brought to bear by morality groups
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Running head: BIG 5 Assignment #1 Big Five Personality Traits Mary D. L. (Lorrie) Allen Organizational Behavior Dr. James J. Kolacek February 3‚ 2013 Strayer University The Big Five model is a personality theory that describes personality using five basic traits. Openness to experience
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Abstract: For the first part of this lab we refluxed different Carboxylic acids and alcohols in the presence of a acid catalyst in order to form Esters by Fischer Esterification. These Esters had different pleasant smells that we then evaluated. In the second part of the experiment‚ we broke the ester bonds of a triglyceride in order to form glycerol and carboxylate salts. This process is known as Saponification because it produces amphiphilic molecules that allow soap to remove dirt from the surface
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NT1210 Chapter 4 Lab 4.1.1 Standards are put in place to make everything work together error free. Because Stability‚ Consistency‚ Minimization of packet errors. 4.1.2 Because the voltage used to transmit data needs only be high enough for the receiver to detect it. Making the voltage higher would make the receiver electronics more difficult. 4.1.3 Hospitals‚ security systems‚ PA & recording studios. The drawback of STP cables is that they will increase the total cost of an installation.
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Assignment 5 – Art and Abolition By: Joshua Cardinale Land of the Lotus Eaters – Robert S. Duncanson There are several artist and paintings in the Sharon Patton book. To choose one particular landscape painting would be tough. Moreover‚ in choosing this painting and discussing why I think black artists may have used these landscape paintings as a means of expression during the abolitionist movement can be possible to do so. Within several of these landscape paintings‚ I do believe that I see possible
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Alexis Becker Pre-Lab Experiment 7 Avinash Pallagani Investigating Stoichiometry with sodium salts of carbonic acid 4/2/14 A summary of the concepts: The purpose of this lab is to better understand “stoichiometry”. We will be reacting sodium carbonate (NaHCO)3 and sodium carbonate (Na2CO3) with hydrochloric acid to produce sodium chloride‚ water‚ and carbon dioxide. The balanced chemical reaction looks like this: NaHCO3 + HCl = NaCl + H2O + CO2 CAUTION: Be especially
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For this lab it was necessary to bring a watch with a second hand‚ as well as personal protective gear: lab coat‚ safety goggles‚ and safety gloves. It was best to work in pairs and one partner needed to be a timekeeper while the other one would record the data. The timekeeper then would announce every 5 second interval‚ beginning from when the enzyme was added to the tube. On the other hand‚ the recorder would read and record the absorbance from the spectrometer at the 5 second intervals. This was
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Darwin’s Finches Lab In this inquiry lab‚ we explored natural selection using a laboratory. We wanted to see what was the effect of the type of food available on the frequency of different types of bird beaks. Our hypothesis was that If the type of the food available changes‚ then the frequency of beak types will change‚ because birds with beaks more suited to the available food will be more successful over time. Variables: Independent Variable: type of food available
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