Table 1. Observations from week 2 for the detection of ammonia using the Nessler’s reagent and from week 1 for the pH using bromothymol blue indicator with the inoculation of P. vulgaris‚ P. fluorescens‚ and B. Cereus in peptone broth. Tubes were incubated at room temperature for 7 days and 14 days. Soil Microorganism Nessler’s Reagent (color reaction pH (bromothymol blue) Our results pH (bromothymol blue) Class results P. vulgaris Deep yellow ++ 8.0 8.0‚ 7.5‚ 6-7‚ 11.5 P. fluorescens
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Self-isolation Benedict Arnold‚ an allusion Salinger uses in The Catcher in the Rye‚ greatly helps enhance Holden’s story and contributes to the theme of isolation and loneliness. First of all‚ Benedict Arnold was a traitor‚ and hid his true identity from everybody he knew. Much like him‚ Holden pretends to be fine‚ even though he is extremely hurt and depressed because of Allie’s death. Holden gives us a glimpse of his concealment when he says that he “didn’t want anyone to know that I was even
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These biological macromolecules are to be identified by the changes in colour through three different tests - Iodine Test for starch and glycogen‚ Benedict ’s Test for reducing sugars‚ and Biuret Test for Proteins. However‚ only two macromolecules are being identified in this experiment - carbohydrates and proteins. There are 12 solutions to be tested in this experiment. The Iodine test is used to indentify
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141–143. Grasshoff‚ K. Ehrhardt‚ M‚ and K. Kremling (1983). Methods of Seawater Analysis. Grasshoff‚ Ehrhardt and Kremling‚ eds. Verlag Chemie GmbH. 419 pp. Murray J.N.‚ Riley‚ J.P. and Wilson‚ T.R.S. (1968). The solubility of oxygen in Winkler reagents used for the determination of dissolved oxygen. Deep-Sea Res.‚ 15‚ 237–238. Strickland‚ J.D.H.‚ and Parsons‚ T.R. (1968). Determination of dissolved oxygen. in A Practical Handbook of Seawater Analysis. Fisheries Research Board of Canada‚Bulletin
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ev milk‚ 50% egg solution‚ 1% sucrose‚ 4 test tubes‚ 1 test tube rate‚ safety glasses‚ pipets and the reagent solution. For test 2 for starches the following materials were used: Di water‚ 1% starch solution‚ onion juice‚ sucrose solution‚ iodine reagent‚ 4 test tubes‚ test tube rack and pipets. In test 1 and test 2 each solution was placed in a separate test tube with the corresponding reagent added to each as well. In test one for proteins each substance that showed a purple color it indicated
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The purpose of this experiment was to synthesize triphenylmethanol from a Grignard reagent. The Grignard reaction technique was used in this synthesis but due to the fact that it is such a strong nucleophile and base‚ it was important to prevent water from interfering with the Grignard reaction. Purity of the product was determined by measuring the melting point. Reagent Table: Structure Name Molecular formula Molar mass Density Melting point Boiling Point Diethyl ether C4H10O
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Chemical and Physical Processes of Digestion Lab Report Questions Activity 1 What is the difference between the IKI assay and Benedict’s assay? IKI assay detects the presence of starch‚ and the Benedict assay tests for the presence of reducing sugars as well as IKI turns blue black whereas Benedict is a bright blue that changes to green to orange to reddish brown with increasing levels of maltose What was the purpose of tubes #1 and #2? Why are they important? Because they are the controls
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police more favorably than males (Brown & Benedict‚ 2002). Brown and Benedict (2002) also stated that males are somewhat more likely than females to believe that the police use too much force. The authors also noted that a study conducted in New Zealand revealed that females are more likely than males to be satisfied with the police handling of problems and are more likely than males to hold favorable attitudes towards the police (Avdija‚ 2010; Brown & Benedict‚ 2002). Other studies indicate that males
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1. Is Rand correct that if you accept altruism‚ then you end up with a lack of self-esteem and a lack of respect for others? I think Rand is wrong about altruism because‚ not everyone wants help; therefore it is not another persons obligation to help another if they don’t want to. When we help someone it should come from the heart not because we feel as though we have to‚ also when we give‚ without expecting in return that is true charity. However‚ it has nothing to do with neither lack of self-esteem
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Abstract: The purpose of this lab was to synthesize triphenylmethanol from benzophenone and bromobenzene by the formation of a Grignard compound with the reagents bromobenzene and magnesium metal. The bromobenzene was first transformed into the Grignard compound and was then reacted with the benzophenone to make the final product. The mixture was then mixed with sulfuric acid and the organic layer was extracted via a separatory funnel. The mixture was then recrystallized from methanol and was allowed
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