When Chemicals React! Mr. Bell’s honors level chemistry class conducted an experiment during their lab demonstrations‚ this consisted of elements such as phosphorus and calcium chloride in their experiment. This along with another hydrogen based sunstance produced‚ what looked like a pinkish-looking substance inside of their flasks that were at their lab stations. Sophmore Kelly Caudel said‚ “ I actualley enjoy doing the experiments in this class‚ because it gives us a chance to get away from
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Determination of Florfenicol in Catfish by UV-mediated High Performance Liquid Chromatography (HPLC) 1. Introduction 1.1 Description of the Analyte Florfenicol (C12H14Cl2FNO4S) is a derivative of thiamphenicol. Its structure is identical to that of chloramphenicol – a synthetically developed antibiotic for veterinary use‚ such as treating a wide range of bacterial infections (Hayes p. 7). It is commercially available as 50 percent of Aquaflor® premix‚ which has been approved for the control of bacteria
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Name: Nikia Martinez Class: Biology 240L L3-1201 Assignment: Electrocardiography Lab Report Due: April 3rd 2012 Professor: Dr. B. Schoffstall Introduction In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary
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the percent yield by dividing the expected yield‚ the amount of product that should be produced based on your stoichiometric calculations‚ by the actual yield‚ the amount of product that is experimentally obtained from a chemical reaction. In this lab‚ I have determined the reaction for mixing two reactants together; I measured out 0.005 moles of each reactant‚ lead (II) nitrate and potassium chromate. I dissolved‚ mixed‚ and made them react to make products; I compared the mass of the two reactants
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Engine Lab Report Diesel Engine Load/N |Fuel Time/s |dH/mmH2O |Speed/r.p.m |Temp/℃ |Air consumption/kg/H |Fuel consumption/kg/H |Air-fuel ratio |Power/kw |Efficiency/ % | |40 |121.6 |17.5 |3018 |26.6 |130.16 |2.47 |52.7 |4.5 |0.019 | |80 |94.72 |17.5 |3009 |26.7 |130.14 |3.17 |41.05 |8.97 |0.059 | |125 |72.76 |17 |3009 |26.8 |128.25 |4.12 |31.13 |14.02 |0.111 | |171 |56.95 |17 |3000 |26.9 |128.23 |5.72 |24.33 |19.12 |0.161 | |212 |46.06 |16.5 |3006 |27.1 |126.28 |6.51 |19.40 |23.76 |0.202 | |232
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Discussion Our results indicate that the presence of iron increases the rate of the peroxidase’s activity‚ judging from the increase in absorbance with increasing amount of iron. This result supports our hypothesis that the iron acts as a cofactor in peroxidase’s activity and results in the faster rate of the reaction. Also‚ we assumed that the more we put iron in the solutions‚ the faster the rate is. This assumption is also supported by the results that higher concentration of iron cofactors shows
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Discussion The second experiment of the semester focuses on separating and identifying the components of Panacetin‚ which is a common medication that relieves pain. The label reveals that Panacetin is composed of sucrose (10%)‚ aspirin (40%)‚ and Tylenol (50%). Although this information is reported‚ the true composition of Panacetin is questionable. While sucrose and aspirin are present in Panacetin‚ Tylenol may be replaced by an unknown component (acetanilide or phenacetin). Separation of the components
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Determination of the Effect of pH on Amylase Activity Grace Chung Abstract: Amylase is an important enzyme in the human body as it allows for the consumption of starch by breaking the polysaccharide down into maltose units. All enzymes‚ including amylase‚ function best at a certain optimal pH. Therefore‚ in this experiment‚ the effect of different pHs on the reaction rate of amylase is studied. It was hypothesized that the amylase-starch reaction would proceed fastest at a pH closest to that of the
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Bioinformatics Lab Report Hypothetical Phylogenetic Tree: Using a cladistic approach‚ we constructed a hypothetical phylogenetic tree of many different plant taxa by comparing their morphologies. We first decided to sort the various types of plants into groups based on morphological features. After sorting these plants into five different groups we began to determine how the plants differed from eachother in the group and what features set them apart. From this we started to create
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Lab Report Enzymes (must be typed) Name: Amanda Gallegos Date: 2/15/15 Section: BIOL 101GL What is the Hypothesis of this experiment? (3 points) -The highest temperature will affect the reaction rate of enzymes. What is the dependent variable? (1 point) -Change of rate/product/color/absorbency. What is the independent variable? (1 pt) -The temperature. Explain in detail the procedure that you followed (including amount of substrate‚ enzyme etc‚ and the whole procedure including incubation times)
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