Reaction Data Tables: Step 3: Show the calculation of the needed amount of Na2CO3 CaCl2.H2O(aq)= m/M =1/147 =0.0068 mol CaCO3(s)=0.0068*1/1 =0.0068 mol CaCO3 (s)= CaCO3 mol *CaCO3 g =0.0068 mol*100.01 g =0.68 g Convert moles of Na-2CO3 to grams of Na2CO3 = 0.00680 moles Na-2CO3 x 105.99g Na-2CO3 1 mole Na-2CO3 = 0.72g 0.72g of Na-2CO3 to fully react with 1g of CaCl2-.2H2O Step 4: Mass of weighing dish _0.5_g Mass of weighing dish and Na2CO3 _1.2_g
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mortality in Kenya Infection rate is highest between 15-44 years with a nine fold increase since early 90’s due to the HIV/AIDS pandemic. The HIV infected have an increased incidence with a majority presenting with smear negative PTB Hypothesis Chest x-ray in itself is not an effective method of diagnosing smear negative pulmonary tuberculosis in H.I.V positive patients Broad Objective To assess the utility of the radiological manifestations of pulmonary tuberculosis in HIV infected smear negative
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1: The mean time to clean a motel room is 15.0 min and the standard deviation is 1.6 min and the data are normally distributed. a. What percentage of the rooms will take less than 12.0 min to complete? Answer: 0.0301% Reasoning/Work: from my understanding I subtracted 1.8 from 1.88 which is my answer = .08 then I found the answer on the table b. What percentage of the rooms will take more than 21.0 min to complete? Answer: 0 % Reasoning/Work: the answer is 0. c. What percentage of
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EXPERIMENT 1: THE HEAT CAPACITY RATIO FRANK KAYEYE 100886802 Purpose: The purpose of this experiment was to calculate the heat capacity ratio γ for three gases find in three different classes. The three different gases and their classes are; helium which is classified as a monatomic gas‚ nitrogen which
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Chemistry 1 February 3‚ 2014 Harvesting CaCo2 in a precipitate reaction results in less grams desired amount (2 grams) Abstract: The objective of this experiment was to synthesize 2.00 grams of CaCo2 for a hypothetical manufacturing company using the two least detrimental (in regards to health and the environment) and least expensive chemicals possible through a precipitate reaction. A precipitate reaction happens when cations and anions of certain aqueous solutions react and combine forming
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focusing on the evolution of McGregor’s Theory X and Theory Y in relation to the development of management theory. Moreover will be explaining the definition of X and Y theory and its relevance to 21st century. McGregor proposed two contrasting sets of managerial assumptions about the workers. He further examined taking Taylor’s traditional view of workers and Mayo’s human relation approach into consideration‚ which he labelled Taylor’s view as ‘Theory X’ and as Mayo’s view as ‘Theory Y’ (Montana
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Chan ges in Does X Really Cause Y? By Bryan Dowd and Robert Town September 2002 AcademyHealth is the national program office for HCFO‚ an initiative of The Robert Wood Johnson Foundation. Foreword Health policy issues often dominate state and federal policymakers’ agendas. In the most recent session of the United States Congress alone‚ the House and Senate addressed legislation concerning a patients’ bill of rights‚ prescription drugs for seniors‚ and generic drug substitution
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Xbox Kinect: Fun‚ Healthy‚ Convenient‚ Valuable The Xbox Kinect has introduced a new wave of technology in motion gaming. Microsoft’s product is one of a kind and soaring sales during the past three months have proven that consumers are interested and are willing to pay a premium price to meet their needs and wants that competitors such as the Wii are not currrently meeting. The Xbox Kinect has had great success in its initial release because it is meeting the wants and needs of its target market
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TEKNOLOGI MARA FAKULTI KEJURUTERAAN KIMIA ENGINEERING CHEMISTRY LABORATORY (CHE 485) GROUP : GROUP 1 EXPERIMENT : 1 - DETERMINATION OF THE CONCENTRATION OF ACETIC ACID IN VINEGAR DATE PERFORMED : 26TH OF SEPTEMBER 2013 SEMESTER : 1 PROGRAMME/CODE : EH220 - BACHELOR OF CHEMICAL ENGINEERING (HONS.) Table of content NO Title Allocated Marks (%) Marks 1 Abstract / Summary 5 2 Introduction 5 3 Aims 5 4 Theory 5 5 Apparatus 5 6 Methodology /
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Chemistry 110 Midterm 1 October 11‚ 2005 1. What are the possible values for the orbital angular momentum quantum number l given the following values for the other three quantum numbers: n = 4‚ l = ?‚ ml = 0‚ ms = +1/2 A. B. C. D. E. 0 1‚ 2‚ 3‚ or 4 3 0‚ 1‚ 2‚ or 3 none of these answers 2. If the wavelength of an electron is equal to the radius of the n=2 orbit in He+‚ what must the velocity of the electron be? A. B. C. D. E. 6.88 x 106 m/s 1.38 x 107 m/s 3.44 x 106 m/s 5.47 x 105 m/s The velocity
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