I. Results Started with : 40mL acetic acid 4.005g PHPB 2.00g trans-stilbene 1.54g KOH 13mL methanol 21mL ethylene glycerol 2.726g stibene dibromide produced Actual yield : 0.818g diphenlacetylene Melting Point : 62 - 75 degrees Celsius II. Discussion The experimental melting point range of our purified product was 60 degrees Celsius when researched‚ but when done experimentally was only. This began around the right range‚ but ended up being much higher than the literature value
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construction of personality. London: Routledge. Handy‚ C. (1990). The age of unreason . London: Arrow Books. Harwood‚ E. (1982). The sociology of entrepreneurship. In C.A. Kent‚ D.L. Sexton‚ & K.H. Vesper (Eds.)‚ Encyclopedia of entrepreneurship Ho‚ T.S.‚ & Koh‚ H.C. (1992). Differences in psychological characteristics between entrepreneurially inclined accounting graduates in Singapore Holmes‚ D.S. (1974). The conscious control of thematic projection. Journal of Consulting and Clinical Psychology‚ 42‚ 323–329
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Subjective information includes a 46-year-old male patient at the office complaining of a continuous‚ persistent rash that is causing itching. He says “the rash started a few weeks ago on his chest and since has spread to both his upper extremities and back.” He does not know why the rash began‚ although he mentions a recent trip to Florida. He denies any allergies. The one and only medication he confirms is long-standing occasional Ibuprofen‚ for his chronic knee pain that occurred many years ago
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References: Koh‚ H.K.‚ & Sebelius‚ K.G. (2010‚ September). Promoting Prevention through the Affordable Care Act. The New England Journal of Medicine‚ (363)‚ 1296-1299. Retrieved from http://www.nejm.org/doi/full/10.1056/NEJMp1008560 Orszag‚ P.R.‚ & Emanuel‚ E.J
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------------------------------------------------- Titration From Wikipedia‚ the free encyclopedia (Redirected from Back titration) Not to be confused with the mathematical notion of tetration. This article is about volumetric titration. For other uses‚ see Titration (disambiguation). A Winkler titration to determine the concentration of dissolved oxygen in a water sample Titration‚ also known as titrimetry‚[1] is a common laboratory method of quantitative chemical analysis that is used
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CDRI - Cambodia’s leading independent development policy research institute Foreign Investment in Agriculture in Cambodia SAING Chan Hang‚ HEM Socheth and OUCH Chandarany with PHANN Dalis and PON Dorina Working Paper Series No. 60 June 2012 A CDRI Publication Foreign Investment in Agriculture in Cambodia CDRI Working Paper Series No. 60 SAING Chan Hang‚ HEM Socheth and OUCH Chandarany with PHANN Dalis and PON Dorina CDRI - Cambodia’s leading independent development
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significant part of the culture of Singapore. Literature in all four official languages has been translated and showcased in publications such as the literary journal Singa‚ that was published in the 1980s and 1990s with editors including Edwin Thumboo and Koh Buck Song‚ as well as in multilingual anthologies such as Rhythms: A Singaporean Millennial Anthology Of Poetry (2000)‚ in which the poems were all translated three times each into the three languages. A number of Singaporean writers such as Tan Swie
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tiffany outlet store tiffany outlet locations e after chopping boasts your extraordinary excess fat of 128.54 carats.And until very recently‚ was the main golden-yellow diamond in the world. The Koh-I-Noor Diamonds ( Mountain / hill of Light ) is now among your British The queen’s Jewels.This fabulous ancient diamond weighs about 105.60 carats.First mentioned in 1304‚ it is believed to have been recently once that is set in Shah Jehan’s legendary peacock throne as one of the peacocks big eyes
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Assessment: Answer the following item with the appropriate response. 1. What is a mole ratio? 2. What piece of information is needed to convert grams of a compound to moles of the same compound? 3. Phosphine (PH3) can be prepared by the hydrolysis of calcium phosphide‚ Ca3P2: Ca3P2 + 6 H2O 3 Ca (OH)2 + 2 PH3 a) One mole of Ca3P2 produces 2 mol of PH3. b) One gram of Ca3P2 produces 2 g of PH3. c) 3 moles of Ca(OH)2 are produced for each 2 mol of PH3 produced
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Acid Base Titration Purpose: The purpose is to calculate the molarity of a NaOH solution by titrating the base with 5mL of standard HCl solution in each trial. By adding the base with unknown molarity to the acid with 0.10M the molarity of NaOH can be calculated. The base‚ NaOH‚ helps bring the pH of the acid‚ HCl‚ closer to seven‚ which neutralizes it. When using the buret the amount of NaOH used is able to be determined. Then by writing a balanced chemical equation and using the titration
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