The Distillation of an Unknown Compound INTRODUCTION Distillation is the process heating a liquid to form vapor which is then collected when cooled and separated from the original liquid. The purpose of this experiment was to determine the identity of an unknown substance using simple and fractional distillation. Gas chromatography analysis the components of a mixture by separation of the materials by their different boiling points. EXPERIMENTAL The simple distillation apparatus was assembled
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Abstract In the asymmetric synthesis of (S)-Ibuprofen‚ the compound is synthesized in nonracemic form directly from an achiral precursor. First‚ racemic ibuprofen was converted to aN achiral ketene via the acid chloride by adding thionyl chloride followed by triethylamine. Then‚ ketene was reacted with a chiral and nonracemic (S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides
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GENERAL ARTICLE CHILE: An Evidence-Based Preschool Intervention for Obesity Prevention in Head Start SALLY M. DAVIS‚ PhDa SARAH G. SANDERS‚ RN‚ MSb COURTNEY A. FITZGERALD‚ MSSW‚ LMSWc PATRICIA C. KEANE‚ MS‚ RD‚ LDd GLENDA F. CANACA‚ MDe RENEE VOLKER-RECTOR‚ BAf ABSTRACT BACKGROUND: Obesity is a major concern among American Indians and Hispanics. The Child Health Initiative for Lifelong Eating and Exercise (CHILE) is an evidence-based intervention to prevent obesity in children enrolled
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M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ MARKSCHEME May 2010 CHEMISTRY Higher Level Paper 2 18 pages –2– M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –5– Subject Details: M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ Chemistry HL Paper 2 Markscheme
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The sugarcane undergoing fermentation produced a volume of carbon dioxide that was nearly nine times more than the corn‚ wheat grain and wheat stalk. Wheat grain and corn was nearly doubled that of the wheat stalk and the control (Figure 1). Sugarcane was the leading plant material producing the highest volume of carbon dioxide (mean= 19.9 ± 0.996 mL) while other than the control; the wheat stalk produced the lowest volume of carbon dioxide (mean= 1.33 ± 0.036 mL). As time elapsed‚ the sugarcane
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DISCUSSION NO. 3 THE PERIODIC TABLE OF ELEMENTS Members: Salvador‚ Kim Kristal G. Sanchez‚ Jhoana Marie V. Santeco‚ Francesca Anya C. Sy‚ Shane Francheska Lei Dayanne S. Ureta‚ Nheimelyn E. INUR-7 GROUP 10 HISTORY OF THE PERIODIC TABLE The discoveries of elements stole a long period of time. As a matter of fact‚ several elements were mentioned in Biblical accounts and Koran. However‚ it was in the 19th century where they get to discover a lot of element. And as the number of
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Birla Corporation Case Business activities based on the recent developments The Given data states that Birla’s Profits had been increased from 4.19 crore in 2002-03 to 41.56 crore in 2003-04 and their 88.75% sales consist of sales from cement division. But this was the case in both years 2002-03 and 2003-04 which means those profits were achieved only by improvising on internal factors of the company like improvements in performance of Cement division by achieving the higher capacity utilization
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Marriott Corporation: The Cost of Capital (Abridged) 1. How does Marriott use its estimate of cost of capital? Does this make sense? Marriot use cost of capital as the hurdle rate (minimum rate of return required to accept the project) to discount future cash flows for the investment projects of the three lines of business (Lodging‚ Contract Services and Restaurants). They use this rate to calculate NPV and net present value over cost to decide for the profit rate. Since cost of the project
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[pic] By: Michael Malone Statement of the Problem Rajat Singh‚ a managing director at Hudson Bancorp‚ needs to find a way to rejuvenate the paper check corporation. One main part that needs to be calculated is the appropriate mixture of debt and equity for the firm. The company needs to determine the correct mixture so that they can both minimize the cost of capital and increase the shareholders value. I will analyze the current and future situation of the company‚ trying to find the correct
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