Measurement of Iron in Foods by Atomic Absorption Spectrometry Chem 462 Abstract The purpose of this experiment is to find the amount of Fe in dietary tablets by UV-visible spectrophotometer. A Perkin-Elmer Lambda 6 UV-Visible spectrophotometer will be used for the unknown sample and the iron(II) standards. Introduction Fe3+ in a dietary tablet is converted to Fe2+ and reacats with 1‚10-phenathronile to form the tris(1‚10-phenanthroline) iron (III) complex. Hydroquinone is used as the
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Jump to Navigation Frame Your location: Assessments › View All Submissions › View Attempt View Attempt 1 of 2 Title: | Exam 2 (Chapters 10-18) | Started: | July 7‚ 2011 12:16 AM | Submitted: | July 7‚ 2011 2:11 AM | Time spent: | 01:54:47 | Total score: | 94/200 = 47% Total score adjusted by 0.0 Maximum possible score: 200 | 1. | Chapter 10 #265 | | Use this information for questions that refer to the World Tennis Ball (WTB) Company case. World Tennis Ball Co. (WTB) makes
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Activity-based costing in restaurants 1. Introduction Interest in cost and management accounting practices in the restaurant industry is rising (Raab et al.‚ 2009; Annaraud et al.‚ 2008). Pavesic (1985) has initiated research in pricing and cost accounting for restaurants‚ introducing the concept of profit factor (PF) in menu engineering (ME). Prior studies‚ such as the one presented in Chan and Au (1998) investigate the implications of not incorporating overhead costs in menu-item profitability
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1/1.5 / ¼.5= .67%/ 22%= 3.05 Ch 22 #7 1. Key Question A firm has fixed costs of $60 and variable costs as indicated in the table on the following page. Complete the table and check your calculations by referring to question 4 at the end of Chapter 23. 1. Graph total fixed cost‚ total variable cost‚ and total cost. Explain how the law of diminishing returns influences the shapes of the variable-cost and total-cost curves Graph AFC‚ AVC‚ ATC‚ and MC. Explain the derivation and shape of each
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analysis of variance (MANOVA) is a generalized form of univariate analysis of variance (ANOVA). It is used when there are two or more dependent variables. It helps to answer : 1. do changes in the independent variable(s) have significant effects on the dependent variables; 2. what are the interactions among the dependent variables and 3. among the independent variables.[1] Where sums of squares appear in univariate analysis of variance‚ in multivariate analysis of variance certain positive-definite matrices appear
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Intro Variable stars are important in astronomy because they provide information on the properties of the stars. Variable stars vary in brightness over time and have periods ranging from a couple hours to hundreds of days. Moreover‚ pulsating stars are variable stars and have two types of pulsating stars‚ such as RR Lyrae and Cepheid. Additionally‚ the simulators in this lab gives individuals a visual model of how variable stars are determined and measured. Therefore‚ the simulators will give individuals
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full cost pricing policy. The discussion centred around the traditional method currently in use‚ compared and contrasted with ABC‚ Activity Based Costing a technique which re-examines the problem that has faced accountants for decades – that of allocation and absorption of overhead. Traditional pricing method has been based upon absorption costing and the treatment of overhead usually followed a set procedure. • Cost centres are identified and established within the organisation. • Cost
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Practice Test Part I - Multiple Choice 1. Suppose that the scatterplot of (log x‚ log y) shows a strong positive correlation Which of the following must be true? I. The variables x and y also have a correlation close to 1. II. A scatterplot of (x‚ y) shows a strong nonlinear pattern. III. The residual plot of the variables x and y shows a random pattern. (a) I only (b) II only (c) III only (d) I and II (e) I‚ II‚ and III 2. What is the purpose of residual plots? (a) To determine
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VARIABLE-RATE PREFERRED STOCK Preferred stock has frequently been issued in connection with mergers and acquisitions. Often the preferred stock is issued with a conversion feature‚ so in the long run there is a probability it will become common stock capital. Preferred stock allows the acquired firm’s owners a prior claim relative to common stock and reasonably definite dividends while simultaneously giving the acquiring firm a form of leverage without strapping it with the rigid obligations of
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(calendar month). Ramadan A crescent moon can be seen over palm trees at sunset in Manama‚ Bahrain‚ marking the beginning of the Muslim month of Ramadan Observed by Muslims Type Muslim‚ cultural Begins 1 Ramadan Ends 29‚ or 30 Ramadan Date Variable (follows the Islamic lunar calendar) 2010 date 11 August – 10 September 2011 date 1–29 August 2012 date 20 July-18 August Celebrations Communal Iftars Observances Sawm (fasting)‚ zakat (almsgiving)‚ Tarawih prayer‚ reading the Qur’an Related
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