pH and Chromatography Lab Report Kevin Rivera Biology Mr. Langley 2C 10/7/13 Introduction In this lab‚ of pH and Chromatography‚ in the pH aspect of the lab we are trying to figure out the pH level of certain chemicals by writing down of known solutions to find the type of unkown solution using pH standards. In the Chromatography‚ we are trying to separate the chemicals using water and a piece of paper. Methodology Materials: Safety Goggles pH indicator & pH indicator key
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Case Study 2 Chem-Med Company 1. What was Chem-Med’s rate of sales growth in 2007? What is it forecasted to be in 2008‚ 2009‚ and 2010? a. 2007: 25% b. 2008: 40% c. 2009: 40% d. 2010: 40% 2. What was Chem-Med’s net income growth in 2007? What is it forecasted to be in 2008‚ 2009‚ and 2010? Is projected net income growing faster or slower than projected sales? After computing these values‚ take a hard look at the 2008 income statement data to see if you want
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tested for by a possible employer include Cocaine (crack)‚ Amphetamines (crystal)‚ Opiates (codeine‚ morphine‚ heroin)‚ PCP (phencyclidine)‚ and Marijuana. Gas chromatography/mass spectrometry is used to test hair and urine samples of possible drug abusers or job applicants‚ and it is the best method for the testing of drug use. Gas chromatography and mass spectrometry are two different methods for identifying chemical substances‚ and the two instruments have be coupled together to perform a highly complementary
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Alkenes from Alcohols: Analysis of a Mixture by Gas Chromatography Aim: To analyze a mixture of alkenes by gas chromatography. Introduction: In this lab‚ we specifically used elimination reaction; however we only used the E1 reaction. In the presence of strong acids‚ alcohols protonate to form a good leaving group‚ namely water. Upon loss of a proton to a good leaving group‚ an introduction of unsaturation (a double bond) can be preformed. According to Wikipedia‚ an E2 reaction is typically
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I currently work for a Wyndham owned resort. We have several third party service providers; however‚ two of our main ones are Ecolab and Ultra Chem. Ecolab is a mandatory provider of our core cleaning chemicals and pest control because Wyndham has an agreement with them. Our sales representative has established a great relationship with us through keeping good records about our order history‚ equipment‚ needs and problems. When I refer to past issues or orders‚ he always knows exactly what I
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Lab experiment 12 Percent of water in a hydrate The goal of Experiment 12 was to learn how to calculate the percent of water (by mass) in barium chloride and an unknown hydrate salt‚ as well as properly calculating the water of crystallization for the unknown hydrate salt. A hydrate salt is composed of anions (-) and cations (+) surrounded by a fixed number of water molecules‚ called water of crystallization. The hydrate decomposes upon heating and
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University of Texas at Tyler Lab 3C: Purification of L-Lactate Dehydrogenase By Affinity Chromatography on Cibacron-Blue Sepharose David Alexander 10-15-2014 Dr. Black Chem 4135.001 Abstract: Like the previous experiments‚ the ultimate goal of this lab was to purify the enzyme sample. However‚ this is the last lab for purification and high level techniques of purification were employed to achieve this. Dialysis was used first‚ lowering the small-molecule concentration within the sample. Finally
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Chem 1406 Isolation of Casein Report Sheet Name Melanie Black-Van Wright Date 11/10/14 Partner if applicable Part I: Observations of formation of casein precipitate The milk began to curd. As the curd increases the milk appeared more clear at times. Mass of casein 1.65 g Part II: Test tube Observation of CuSO4 biuret Test Test Results (+ or -) Casein Solution turned violet + Egg white solution turned violet + Water solution turned blue - Sugar solution turned blue - Postlab Questions 1.
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Case 2 Chem-Med Company 1. Net Sales Growth (all credit)=[(Current Year Net Sales-Last Year Net Sales)/Last Year Net Sales]X100 a. Sales Growth 2007=[(3814-3051)/3051]X100= 25% b. Using the same formula for the remaining years and the data in figure 1 of the pro forma section: 2008=40% c. 2009=40% d. 2010=40% 2. Net Income Growth=[(Current Year Net Income-Last Year Net Income)/Last Year Net Income]X100 e. Net income Growth 2007=[(1150-766)/766]X100=50%
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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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