Research Question: To investigate how varying the pH of bromothymol blue affects the absorbance value of the solution which determines the equilibrium constant (pKa) of the indicator. Variables: Variables Variables Measured Method of measurement Independent pH of the six buffer solution A pH probe attached to a data-logger will be used to measure pH Dependent Absorption of the buffer solutions at wavelength 435.0nm and 617.0 nm A spectrophotometer (±0.001) will be used to measure absorbance
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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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Relationship of Chromium (Cr) mobility in soil and pH value using Electrochemical Method Siti Khadijah C.O. 1‚ Sabariah A.2‚ 3Zuliziana S.‚ Jestin Jelani4‚ Nordila A.5 1‚3‚4‚5 Lecturer‚ Civil Engineering Department‚ Faculty of Engineering‚ Universiti Pertahanan Nasional Malaysia 2 Lecturer‚ Faculty of Civil Engineering Universiti Teknologi Mara‚ Selangor‚ Malaysia Email : sitikhadijah@upnm.edu.my Abstract: Heavy metal contamination may provide a better indication of the potential risk
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c. stomach d. pancreas 2. What part of the digestive system where mechanical digestion happens? a. mouth b. rectum c. stomach d. esophagus 3. The throat is divided into two separate tubes: the trachea and the esophagus. Which of the organs prevents food from entering the trachea? a. The uvula b. The tongue c. The trachea d. The epiglottis 4. What is the main functions of the digestive system? a. ingestion and digestion
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Experiment 4 – Effect of Temperature on Enzyme Activity Aim To study the effects of temperature on the activity of amylase enzyme on starch solution. Introduction Enzymes are widely known as biological catalyst. Almost all cellular reactions are controlled and guarded by enzymes. Virtually every metabolic reaction which takes place within a living organisms are catalyzed by enzymes. Enzymes are complex three-dimensional globular proteins. Some of the enzymes are built up off proteins and
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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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Aim: Investigate the effect of different temperatures and chemicals including various pH levels‚ alcohol and detergent on the cell membrane structure as well as function. Hypothesis: Increasing the temperature and pH levels which the beetroot membrane cells are exposed to will increase the amount of dye that passes out of the membrane. Materials: Part A • Bunsen Burner‚ Tripod and a Wire Gauze • 250mL Beaker • A 100° thermometer • Matches • 10mL measuring cylinder • Sticky labels and a Pen
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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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Effects of the Bottleneck and the Founders effect Cecil Smith GS102 Grantham University Online The bottleneck effect happens when something of a great devastation has happened‚ causing a great amount of people to lose their lives and leave behind very few people at the most. The bottleneck effect happens at random and can kill of a whole population and with it can also wipe out the gene pool by doing so. An example of the bottleneck effect would be something like a tsunami‚ or an earthquake‚ which
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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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