16-3 Red Cabbage Juice pH Indicator Sources: Prof. George Ewing’s C100 Demonstration Notes; Prof. Carolyn Huffman’s Fall ’93 C100 lecture; B. Z. Shakhashiri‚ 1989‚ Chemical Demonstrations: A Handbook for Teachers of Chemistry‚ vol. 3‚ pp 162-166. Description and Concept: Red cabbage juice will change to a variety of colors when added to solutions of various pH. Red cabbage juice is a pH indicator. Materials: red cabbage* blender hot or boiling water filter paper (coffee filters
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manuscript. (Page 8‚ line 13-15) Comment 14: Page 8: Explain if pH was controlled during fermentation. In any case‚ do a reference in the result section to the pH at the end of fermentation Response: The pH was not directly controlled during the fermentation. In the line with typical studies conducted for ABE production‚ the medium was supplemented with buffer (50 g/L KH2PO4‚ 50 g/L K2HPO4‚ 220 g/L C2H3O2NH4) as an approach to control the pH changes during the fermentation. In addition‚ it has been reported
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Effects of Temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity INTRODUCTION Enzymes‚ proteins that act as catalysts‚ are the most important type of protein[1]. Catalysts speed up chemical reactions and can go without being used up or changed [3] Without enzymes‚ the biochemical reactions that take place will react too slowly to keep up with the metabolic needs and the life functions of organisms. Catecholase is a reaction between oxygen and catechol
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The article‚ "Calculating the optimum temperature for serving hot beverages" (2007) by Fredericka Brown and Kenneth R. Diller focuses on the science behind the optimum serving temperature of hot beverages. The purpose of the article is to persuade hot beverage vendors to reduce the serving temperature of hot beverages in order to "reduce the scald burn hazard and improving customer satisfaction" [1]. This analysis is to underline how the authors made their article simple to comprehend by utilizing
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Part I: Conceptualizing a Business BUS/475 September 26‚ 2013 Abstract In this paper’s content‚ Feather Duster’s Cleaning Services develops a conceptualized business plan to reflect its statements of mission‚ vision‚ and values. The company is a cleaning service whose objective is to comply with its statements while rendering the best quality work and to be the best service provider to its client. Part I: Conceptualizing a Business Feather Duster’s
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University of Pardubice Faculty of Arts and Philosophy Department of English and American Studies Grammar in Newspaper Headlines Bachelor Paper Author: Eva Prášková Supervisor: PhDr. Petra Huschová‚ Ph.D. 2009 Univerzita Pardubice Filozofická fakulta Katedra anglistiky a amerikanistiky Grammar in Newspaper Headlines Gramatika novinových titulkù Bakaláøská práce Autor: Eva Prášková Vedoucí: PhDr. Petra Huschová‚ Ph.D. 2009 Prohlašuji: Tuto práci jsem vypracovala samostatnì. Veškeré literární
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Monstar Lab PH : Testing as A Service Software testing is essential to the software development nowadays and will continue to be in demand as time goes by. Apps are getting more and more critical to the human lives day by day and the speed to market is getting faster more than ever and yet it’s a must for software companies to provide stable and satisfying applications. Throw in the costing constraints and evolving requirements in the mix‚ and you’ll now position yourself where software development
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Ranking Salt Solutions by pH 6-2: Ranking Salt Solutions by pH In this assignment you will be asked to rank aqueous solutions of acids‚ bases‚ and salts in order of increasing pH. This is most easily done by first identifying the strong acids that have the lowest pH‚ the strong bases that have the highest pH‚ and the neutral solutions that have a pH near 7. The weak acids will have a pH between 1 and 6 and the weak bases between 8 and 14. The exact order of weak acids and
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pH Levels and Temperature Water is very important in life. Without water‚ nothing could survive. Water needs to be clean to drink. People all over the world are using filters to clean and purify water. The best type of filter‚ out of dirt‚ cloth‚ and grass‚ is the grass filter (Allen). The grass filter is completely natural‚ therefore it cleans and purifies the water the best. Does a grass filter affect the pH level and temperature of lake and stream water? The temperature of water affects how solubility
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Testing for reducing sugars‚ non-reducing sugars‚ starch‚ lipids and proteins in unknown substances: Our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example; they could be monosacchrides or disaccharides. This was carried out by using Benedict’s test. To find out which substances from our five samples were non-reducing sugars‚ since some disaccharides are reducing sugars and this would be carried out by using Benedict’s
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