QUALITATIVE TESTS OF CARBOHYDRATES Final Lab Report Submitted by Brittany Fitzgerald 545301 Prepared for Nancy Cook Chemistry 3501 Monday November 26‚ 2012 RESULTS PART A: As a result of the Benedict’s test on various sugar solutions‚ it was found that galactose‚ mannose‚ arabinose‚ ribose‚ lactose‚ fructose‚ maltose‚ and cellobiose tested positively and therefore are considered reducing sugars. Glucose‚ starch‚ sucrose‚ and methyl-D-glucopyranoside on the other hand tested
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Chemistry S-20 Week 1 Alkenes: Isomers and Nomenclature 1. There are 6 unique alkene isomers of the hydrocarbon C5H10. Draw each of these isomers‚ and provide a systematic name for each. 1-pentene (E)-2-pentene (Z)-2-pentene 2-methyl-1-butene 2-methyl-2-butene 3-methyl-1-butene 2. For the three alkenes above which are various isomers of pentene‚ rank them in order of stability. Explain your ranking. most stable (more subst. double bond) less stable (cis alkene is
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Abstract Because water serves as vehicles in the transmission of many pathogens‚ coliforms are commonly used as indicators to monitor the quality of water. I hypothesized that Lake Thoreau would have more fecal coliforms because it is a more stagnant environment meaning more animals can stop their and release their feces‚ and also the animals that reside there continue to reproduce‚ leaving no exit for their excretions. By using the MPN test‚ I was able to detect the coliforms from the fermentation
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Phosphate Test. Upon performance of the tests mentioned‚ the principles involved were identified and stated based on the results obtained from the experiment. 2. MethodologyMaterials such as water bath‚ test tubes‚ evaporating dish‚ test compounds and reagents were gathered and prepared. In Dische Test‚ ten (10) drops of test compound and Diphenylamine wasplaced in a test tube and heated in boiling water bath for ten minutes. Color change on the solution was noted. In Murexide Test‚ ten(10) drops of
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from a commercial reagent‚ at 90% (w/w) purity and specific gravity of 1.84. (answer : 59.18 mL) (Oct 2007) c) 250 mL 50 ppm of AgNO3 from the solid chemical (answer : 0.0125 g) d) 500 mL 6.5% (w/v) aqueous ethanol (answer : 32.5 g) e) 0.1 L 6.0 M H3PO4 from a commercial reagent‚ at 85% (w/w) purity and specific gravity of 1.69 (answer : 40.95 mL) (Oct 2008) f) 400 mL 0.080 M of AgNO3 from the solid chemical (answer : 5.44g) + g) 500 mL 100 ppm Ag from pure reagent solid silver nitrate
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In this lab we employed various assays utilizing a biuret reagent‚ coomassie brilliant blue reagent‚ and ultraviolet light in order to determine the identity of six unknown solutions and the concentration of a bovine serum albumin sample. We were given three samples that lacked protein‚ and three samples containing proteins‚ and using a spectrophotometer we assessed the amount of light absorbed versus the light transmitted‚ based on the principles of the Beer-Lambert Law. The three proteins used
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Chemistry 1: PROBLEM SET SY 2012/2013 CLASS #: _______________ NAME_________________________________________ SECTION: ______________________ Stoichiometry II - Mole Calculations/ Limiting and Excess Reagent – Lecture Notes 1. Given the balanced equation N2(g) + 3H2(g) 2NH3(g) How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen? 2. Given the equation: SiO2 + HF SiF4 + H2O a. Calculate the number of moles HF that would completely react with 2.5 moles of
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would mimic the reduction taking place in this experiment is hydride addition using sodium borohydride‚ NaBH4. Normally an alternative to this oxidizing agent would be lithium aluminum hydride‚ LiAlH4‚ however this reagent would also react with the ester portion of our starting reagent. The effect of reducing the ketone via hydride addition is that product is entirely a racemic mixture (McMurry 696). After the initial reaction the product was isolated using a series of vacuum filtrations‚ ether extractions
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Abstract The objective of this lab was to measure the amount of protein from a piece of beef liver . This was done by taking the liver‚ blending it and then using a centrifuge to separate the supernatant from the pellet. Once that was completed‚ ammonium sulfate was added to the supernatant‚ chilled and then spun for a second time. Next‚ 20 mL of water is added to the pellet‚ stirred and the volume was recorded. The teacher calculated the total mass of liver to be 10.098g. Lastly a spectronic
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This work is focused on evaluation of the potential anticancer effect of a kola nut extract on the human immortalized myelogenous leukemia line (K562) and the human immortalized line of T-lymphocyte cells (Jurkat). The objectives of this research are as follows: 1- Does kola nut extract inhibit leukemia? 2- Does the growth in inhibition induced by kola nut extract fellow a dose- and time- dependent response? 3- Does kola nut extract induce apoptosis or necrosis? 4- Which cell line‚ a K562 or Jurkat
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