1. Start off by weighing two paracetamol tablets using some accurate scales. Record the mass down (1.15g). This had to be as accurate and precise as we could get it so we had the correct weight to start the experiment. Without this then the results we found at the end would not be accurate. A problem that could be faced with this is that the scales may not have been fully set to zero. Also it takes time for it to fully reach its weight on the reading so you may move them too quick before the right
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21.88 Supelco Method We rinsed a separatory funnel with tap and then deionized water‚ then poured our unknown sample into the top (ensuring that the stopcock was closed). We rinsed the beaker with methylene chloride and poured the rinsing into the separatory funnel. We added 10 mL of methylene chloride to the separatory funnel from a graduated cylinder. We greased the ground glass stopper with silicone grease and stoppered the separatory funnel. We then inverted it‚ swirling gently and venting
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measuring the 10ml graduated cylinder‚ which is 27.27g and measure the graduated cylinder with t- butyl alcohol‚ which is 32.13g and finding the difference‚ which is 4.78g. Putting the hydrochloric acid and t- butyl alcohol together in the separatory funnel‚ mixing and swirling it and occasionally releasing
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and calcium chloride. Then we add 50 ml of distilled water to each substance‚ sodium carbonate dissolved faster than calcium carbonate. After we mixed both sodium carbonate and calcium chloride and they form a solid precipitate. Then we poured it a funnel with a filter paper to get the solid precipitate. Purpose ● The purposed of the lab is to lets us student know if we know how calculate the percent yield of a double displacement reaction while using the grams that we get from our lab. Objectives
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LAB REPORT ANDREW O. BAAFI Organic Chemistry I Lab. Instructor: Dr. Strange 09-24-01 TITLE: Preparation of Isopentyl Acetate (isoamyl acetate) / Gas Chromatography (Esterification). REFERENCE: Fischer‚ W. H.‚ A. G. Craig. “Microscale Esterification of Peptides and Analysis by MALDI-MS.” http://www.salk.edu/LABS/pbl/brukeran1.htm. 10-02-2001 Mayo‚ Dana W‚ Pike Ronald M‚ Trumper Peter K. Microscale Organic Laboratory. 3rd ed. New York: Wiley & Sons‚ 1994. Strange De Soria‚ Louise. Chemistry
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isolation technique in this experiment‚ a magnet was used to separate the iron filings from the initial heterogeneous solution Filtration: the isolation technique which is accomplished by filter paper and a funnel. The filter paper is folded twice ramen noodle style and inserted into the funnel. From there‚ the heterogeneous mixture may poured into the filter to isolate the sand and pebbles from the mixture
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increasing the time taken to close the burette tap to stop sodium hydroxide being added to the vinegar solution. The increase of sodium hydroxide solution would mean that the results obtained would not be the accurate or close to the accurate value. Funnel: This piece of equipment was added to the top of the burette and it was used to channel the sodium hydroxide solution into the burette. The mouth of the burette was too small to pour the sodium hydroxide
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Courtroom Workgroup Paper Eileen Ritter CJA/204 July 7‚ 2014 Carlos Zuniga Courtroom Workgroup Paper One of the important roles a judge‚ a criminal prosecutor‚ and a criminal defense attorney will carry out is called‚ a “courtroom work group”. The courtroom work group interact on a daily basis by these three entities joining together to converse over matters such as if the case has probable cause to convict the offender or whether or not if there is enough evidence to go forward with a criminal
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References: Schmalleger‚ F. (2011). Criminal Justice today: An Introductory text for the 21 century (11th ed.). Retrieved from The University of Phoenix e-Books Collection database. Smith‚ A. (2010) what is Criminal Justice Funnel? Retrieved from http://www.ehow.com/facts_6870601_criminal-justice-funnel_.html
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• Evaporating basin • Bunsen Burner • Water • Funnel • Retort stand • Funnel Paper • Sieve • Iron Filings • CaCO3 • NaCl • tripod • Gauze Mat • Cling Wrap • Saftey Goggles Method: 1. Gather Apparatus and the mixture of Iron‚ CaCO3 and NaCl. 2. Weigh beaker and mixture. 3. Use magnetic separation to remove Iron filings. 4. Set up retort stand and add filter paper to the filter funnel. 5. Put the rest of the mixture into the filter funnel and add water slowly to filter out the water and
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