The Rate Of Photosynthesis: Lab report 1) Construct a graph of your data 2) Using the graph‚ estimate the time at which 50 percent of the leaf disks were floating on the surface. The point at which 50 percent of the leaf disks are floating will be you point of reference for future investigations Using the graph the estimated time that roughly 50% of the leaf disks were floating on the surface was around the 10th minute. At the 10th minute our number rose up to
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INTRODUCTION From natural gas‚ crude oils‚ and other fossil materials such as coal‚ few intermediates are produced that are not hydrocarbon compounds. The important intermediates discussed here are hydrogen‚ sulfur‚ carbon black‚ and synthesis gas. Synthesis gas consists of a nonhydrocarbon mixture (H2‚CO) obtain- able from more than one source. It is included in this chapter and is fur- ther noted in Chapter 5 in relation to methane as a major feedstock for this mixture. This chapter discusses
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Curcumin amends oxidative stress and antioxidants status in olfactory lobes‚ cerebrum‚ hypothalamus-hippocampus‚ cerebellum and pons-medulla of mice acutely intoxicated with lindane Abstract: Present study ascertains the neuroprotective potential of curcumin in olfactory lobes‚ cerebrum‚ hypothalamus-hippocampus‚ cerebellum and pons-medulla of mice‚ intoxicated with lindane. Lindane is highly toxic to central nervous system (CNS)‚ causing mental and motor retardation. Oxidative stress due to abnormal
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The TLC plate remained blank showing proof of no compound other than the hexane itself. This error was expected since in the first part of the experiment‚ oxidation of fluoreneto Fluorenone was supposed to be done to a 50-50 level. As mentioned earlier‚ the oxidation had carried out longer than expected and hence the sample contained little or none of the fluorene. Thus‚ no value of Rf were obtained for the fluorenein the experiment. When the solvent was switched
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May 1‚ 2013 Enzymes as Drug Targets Enzymes are defined as any of numerous proteins produced in living cells that accelerate or catalyze the metabolic processes of an organism. Enzymes are usually very selective in the molecules that they act upon‚ called substrates‚ often reacting with only a single substrate. The substrate binds to the enzyme at a location called the active site just before the reaction catalyzed by the enzyme takes place. Enzymes can speed up chemical reactions by up to
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Nitric Acid Nitric acid is an acid many people have come across in life. One may have felt nitric acid when touching fertilizers‚ or using dyes. Nitric acid appears in substances we never thing it would be used in. In fact‚ small contents of nitric is acid is found in raindrops that fall from the sky. Nitric acid‚ or known as NHO3aq is an acid formed from reaction of ammonia and oxygen. Nitric acid is a colourless acid when it’s pure‚ or can be found yellow or red. This acid can be very corrosive
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surfaces to prevent abrasion‚ scuffing‚ and contact fatigue. Antiwear additives enhance lubricant performance and extend equipment life. Oxidation Stability Oxidation stability is a hydraulic oil’s resistance to heat-induced degradation caused by a chemical reaction with oxygen. Hydraulic oils must contain additives that counteract the process of oxidation‚ improve the stability and extend the life of the fluid. Without these additives‚ the quality of the hydraulic oil will deteriorate quickly
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------------------------------------------------- The Processes of the nitrogen cycle Nitrogen fixation Atmospheric nitrogen must be processed‚ or "fixed" (see page on nitrogen fixation)‚ in order to be used by plants. Some fixation occurs in lightning strikes‚ but most fixation is done by free-living or symbiotic bacteria. These bacteria have the nitrogenase enzyme that combines gaseous nitrogen with hydrogen to produce ammonia‚ which is then further converted by the bacteria to make their own organic
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1a: Review Redox Assign Oxidation Numbers to the following: a. HNO3 b. PbSO4 c. (NH4)2Ce(SO4)3 Balance the following in acidic medium Al (s) + MnO4- (aq) Al3+ (aq) + Mn2+ (aq) Balance the following in a basic medium Mg (s) + OCl- (aq) Mg(OH)2 (s) + Cl- (aq) Balance the following Redox Reaction: The big nasty problem K4Fe(CN)6 + KMnO4 + H2SO4 KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 +H2O 17.1: Galvanic Cells Review of Redox Reactions Oxidation: _______________________
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After 14 years of trial and error‚ he developed a process he called Appertizing. Fruits‚ vegetables‚ fish‚ or meat was sealed in stoppered bottles and the filled bottles were immersed in boiling water; the heat sterilized the bottles and food alike. Appert knew nothing of enzymes or bacteria‚ nor did anyone else in his day. He did observe that when food was heated in the sealed bottles‚ the food remained good as long as the seal was not broken. The food remained edible until the bottles were
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