spontaneously with time and temperature back to oxygen. * Ozone encounters water vapor‚ and forms hydrogen peroxide. * Ozone encounters a photocatalyst (like CFC‚ HCFC‚ Halon)‚ and is converted back to oxygen. CFCs‚ HCFCs‚ and Halon: The ozone layer is destroyed by CFC’s‚ chlorofluorocarbons‚ that are used as a propellant in aerosol cans‚ and refrigerants in older cars and refrigerators. When Chlorofluorocarbons (Freon and other CFCs) and Bromofluorocarbons (Halons) they became popular
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for Acanthamoeba in its more resistant cyst form. A previous study had already shown that multipurpose solutions were ineffective compared to hydrogen peroxide based systems at eliminating Acanthamoeba trophozoite contaminations.5 This was a follow-up to that study. Another goal of this study was to test the effectiveness of hydrogen peroxide in eliminating Acanthamoeba cysts as well. Since trophozoites are the more susceptible form of Acanthamoeba‚ multipurpose solutions tested previously
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As the temperature increased‚ the enzyme activity also increased‚ however‚ only to an optimal level which was at temperature 32oC. Once the temperature was beyond the optimal level‚ the rate began to decline and this was represented by the concave curve on figure 5 and 7. This was because as the temperature increases‚ the frequency of collisions between the enzyme and the substrate also increased hence faster reaction rate. Whereas‚ the enzymes operated slowly at low temperature as there wasn’t sufficient
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Glucose Oxidase and Its Various Uses Aaron Truong Since glucose oxidase has an end product called hydrogen peroxide‚ which is a harmful substance to bacteria‚ it can be used to fight bacteria‚ or sterilize objects (can have various uses such as in hand sanitizers‚ toothpaste‚ soap‚ etc)‚ not just biosensors. Another key part in the reaction would be C6H12O6‚ or glucose. Glucose oxidase can be applied to diabetics as mentioned earlier‚ as biosensors work by "keeping track of the
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was tested with the oxidase test‚ it was found oxidase negative. The catalase test tests for the presence of catalase which breaks down hydrogen peroxide and oxidase dismutase. A small amount of hydrogen peroxide is dropped onto a slide of unknown 32 and resulted in bubbles. This result shows that unknown 32 is catalase positive since it broke down hydrogen peroxide and oxidase dismutase which resulted in water and oxygen. This eliminated Enterococcus spp. and Streptococcus spp. After the initial
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General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the
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enzyme-catalyzed reactions‚ we made fifteen tubes that contained reaction buffer‚ hydrogen peroxide‚ turnip extract‚ and the dye. These reagents were placed in large bottles and were labeled with a sharpie. We gathered fifteen small test tubes for testing and three large test tubes to fill it with stock solutions needed to carry out the experiment. The large test tubes were filled with buffer‚ dye‚ and hydrogen peroxide. Each test tube made contrasted in the amounts of solutions used. The odd numbered
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Affects of Hydrogen Peroxide Equivalents on Green Synthesis of Adipic Acid. Andrew R. Glessman*‚ Chase W. Turner‚ Audra Cokain‚ Jacob Kindred‚ Darryl Watkins Department of Chemistry and Chemical Biology‚ IUPU‚ 402 N. Blackford St‚ Indianapolis‚ IN 46202 aglessma@umail.iu.edu April 25‚ 2014 Figure _______________________________________________________________Abstract- The synthesis of adipic acid has been a growing topic of discussion due to the harmful impact it has on the environment
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get safety glasses to protect our eyes from any chemicals‚ we could have used aprons but we didn’t really need to. A hot plate to heat up the water. 200 ml tap water‚ three 250 ml beakers‚ one heat-proof glass funnel. Filtered paper‚ vinegar‚ hydrogen peroxide‚ a steel wool‚ gum Arabic and pens and paper. III. Summary of Procedure: Well first we had to boil up the water and the tea. When that was done boiling and heating up we added the vinegar and steel wool. It had changed color by doing
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RCA Critical Cleaning Process This paper was especially prepared by Werner Kern‚ the inventor of the RCA clean. Introduction The manufacturing of a silicon integrated circuit (IC) requires 500-600 process steps‚ depending on the specific type of device. Most steps are performed as unit processes with the complete wafers before dicing them into individual chips. Approximately 30% of the steps are cleaning operations‚ which indicate the importance of cleaning and surface conditioning. The device
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