attributed to loosing crystals in each transferring step. When the product was poured into the funnel a lot of the crystals were retained at the bottom of the test tube. Then when washing the test tube out with solution some of the crystals were suspended back into solution because the solution used was not ice cold. For further experiments this step will only use chilled solvents when washing the crystals in the funnel and the test tube to avoid having yields this low again. Since we started with such a
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up using a separate mortar and pestle. The grinded up pills were then weighed. The grinded up pills were placed in separate beakers each containing 10 ml of Acetone. Once the pills had dissolved in the acetone‚ a vacuum filtration‚ using a hirsch funnel‚ was performed in order to separate out the insoluble components of the pill. The solids were
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12 grams pure potassium-free sodium nitrite 12 ml cold water 4 grams cobalt nitrate hexahydrate 4 ml 50% acetic acid ethanol ice glass rod dropper hotplate beakers measuring cylinder weighing boat test tube filter paper funnel filter flask aeration tube scale vacuum pump METHOD 12.01 grams of pure potassium-free sodium nitrite was weighed and added to 12 ml of cold water in a 100 ml beaker. This mixture was then heated on the hotplate until the solid was
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pictures‚ and more sports‚ but do you know‚ we never ask questions‚ or at least most don’t: they just run the answers at you‚ bing‚ bing‚ bing‚ and us sitting there for four more hours of film-teacher. That’s not social to me at all. It’s a lot of funnels and a lot of water poured down the spout and out the bottom‚ and them telling us it’s wine when it’s not.” (Bradbury 27) In this quote Bradbury creates a phrase for Clarisse in which she describes a typical school day full of activities that are meaningless
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WRITTEN ANALYSIS OF CASES #10 UBER PRICING STRATEGIES AND MARKETING COMMUNICATION Situational Analysis: Uber‚ a smartphone app based service for providing on demand transportation has been gaining growth and brand momentum since inception and has been successful in changing the face of modern day commuting in multiple cities. However with respect to new and existing market competition of the likes of Lyft‚ Hailo‚ and Sidecar along with the existing taxi and livery services and further faced
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Criminal Justice 210 Courtroom Workgroup A Courtroom Workgroup in the United States criminal justice system is an informal arrangement between a criminal defense attorney‚ criminal prosecutor‚ and the judicial officer. Participants within the criminal trial are divided in two courtroom workgroups consisting of professionals and outsiders. Professionals are the courtrooms official actors; these individuals conduct court business and are well versed in the practice of criminal trials.
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benzoic acid‚ its molecular weight was 122 g/mole and its melting point was 122°C. Therefore‚ there were errors that occurred within the experiment. One source of error was from the separation process. Some of the aqueous solution in the separatory funnel containing the ether could have potentially been drained off with the product and the NaOH. This would have caused some ether to remain in the final product which would cause a larger molecular weight to occur and the product would have a lower melting
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School of Chemistry University of KwaZulu-Natal Westville Campus Chemistry 220 Organic Chemistry 2012 LABORATORY MANUAL It is a legal requirement that are worn in this room at all times. Sunglasses (normal or prescription) are NOT to be worn as a substitute for safety glasses. Prescription glasses (except sunglasses) are acceptable PROVIDED THEY COVER THE EYES COMPLETELY. Some types of contact lens should not be worn in the laboratory. Check with your lens supplier. All shoes MUST be
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Water Quality and Contamination Research and its Importance Ursurla L. C. Waller SCI 207 Dependence of Man on the Environment Professor Wayne Davis 2014 September 20 Abstract This report analyses the ability of ordinary substances to pollute water sources‚ filtration techniques‚ as well as the quality of tap and bottled waters. This report discusses the availability of clean water sources‚ factors that affects the quality of water‚ agents of water contamination‚ and how the earth naturally filters
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first question everyone asks – how many leads are you adding to the top of the funnel each month. Track your leads and campaigns each month‚ and visually represent how the total number of new leads‚ and the breakdown by type‚ is changing over time. There’s plenty of room for detail once people want to drill into campaigns‚ but don’t neglect the top-level information. [pic] 3. The Marketing Funnel The marketing funnel is the lifeblood of any B2B marketer. These KPIs often define successful versus
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