The following paragraph describes the procedures and steps taken on day one of the experiment‚ which focused entirely on the synthesis of the isomer based on Protocol B. Certain chemical agents used on day one have both health and safety risks‚ specific details regarding these risks will be explained in more detail in the following procedures‚ but if unfamiliar with any of these
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Section 2 EXPERIMENT: DNA & Protein Synthesis Exercise 1 – Modeling DNA 1. List the four bases which are found in DNA. (1 pt) The four bases found in DNA are cytosine‚ adenine‚ guanine and thymine. 2. Fit any six nucleotides together to form a row‚ then list the six nucleotides in the order you used them. Work with your model pieces and try fitting the bases together to make a double strand as shown in Figure 9 of the lab manual. Which nucleotides form pairs
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The objective of this experiment was the synthesis of Isopentyl Acetate using an esterification reaction between acetic acid and Isopentyl Alcohol‚ using a strong acid as a catalyst. The product was washed‚ and distilled. This approach is called Fisher esterification‚ whereby esters are produced by the esterification of a Carboxylic acid where it is heated with an alcohol in the presence of a strong acid which acts as a catalyst. The ester produced had a banana flavor. The extraction of the
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In the reaction mechanism‚ a carboxylic acid‚ m-toluic acid is used to synthesize N‚N-diethyl-m-toluamide‚ also know as DEET‚ through a nucleophilic acyl substitution reaction. The reaction begins by first converting the m-toluic carboxylic acid into an acyl chlorosulfite through a reaction using thionyl chloride. The carboxylic acid is converted into an acyl chloride because the acyl chloride is more reactive. In this step‚ hydrochloric acid is formed from a hydrogen on the carboxylic acid and a
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nanoparticles have unique properties which help in molecular diagnostics‚ in therapies‚ as well as in devices that are used in several medical procedures. The major methods used for silver nanoparticle synthesis are the physical and chemical methods. The problem with the chemical and physical methods is that the synthesis is expensive and can also have toxic substances absorbed onto them. To overcome this‚ the biological method provides a feasible alternative. The major biological systems involved in this are
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At the beginning of the lab‚ a micro test tube with and without glass wool was weighed on an analytical balance. A watch glass‚ crucible‚ and lid were also weighed. The masses of all the materials needed for the lab were recorded in the data tables of the laboratory notebook. An unknown vial was obtained from the teacher and set to zero on the balance. About 0.6 grams of the unknown was measured into the micro test tube. The analytical balance was set to zero again and then the test tube with the
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The Grignard Synthesis of Triphenylmethanol Organic Chemistry Lab II March 19‚ 2012 Abstract The purpose of this experiment was to synthesize the Grignard reagent‚ phenyl magnesium bromide‚ and then use the manufactured Grignard reagent to synthesize the alcohol‚ triphenylmethanol‚ by reacting with benzophenone and protonation by H3O+. The triphenylmethanol was purified by recrystallization. The melting point‚ Infrared Spectroscopy‚ 13C NMR‚ and 1H NMR were used to characterize and confirm
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crystals 18.287g Claim: Based on my calculations‚ the theoretical yield of Aluminum was 18.160g‚ and the actual yield was 18.287g. This gives a percent yield of 100.699%. Evidence/ Reasoning: By looking at the overall reaction involved in the lab‚ we can see that two moles of Aluminum are needed to react in the reaction‚ producing 2 moles of KAl(SO4)2 ·12H2O. This lets us know that however many moles of Aluminum there are in the original sample will be equal to
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14 may be a possible EEC. Moreover‚ the calculated compensation temperature by inverting the straight line slope‚ T comp = 57.9 ºC‚ is higher than the average experimental value‚ T exp = 32.5 ºC. This great difference between these two values of temperatures might reflect the existence of real EEC rather than experimental error [58]. Another evidence of EEC is the approximate constant ∆G # with a significant change in both ∆H # and ∆S # . Finally‚ EEC was also investigated by using
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(NH2CH2CH2NH2) that formed [Co(en)2(H2O)2]Cl. Then the [Co(en)2(H2O)2]Cl was reacted with H2O2 to change the cobalt’s charge to cobalt(III) from cobalt(II). Finally HCl was added into the solution to form [Co(en)2Cl2]Cl. The percent yield was 45.51%.To synthesis trans isomers of [Co(en)2Cl2]Cl‚ distilled water was first mixed with CoCl2▪6H2O‚ the solution color was changed to wine color. After ethlenediamine (NH2CH2CH2NH2) was added‚ the color of the solution changed to blood color‚ and kept its color until
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