Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of colors
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首先，介绍背景我们了解一下中国的经济，奥巴马政府和他妻子手很嫩China has 1.4 billion people.what does that mean.it means‚whoever chinese people give him one dollor‚he is a billionaire.can you just imagine how many opportunies you have in this dream land.2012.china gdp is 51932 billion Li Ka-shing was born on July 29 to a scholarly family in the ancient city of Chaozhou in eastern Guangdong Province‚ China. His father Li Yunjing was a primary school principal When Japanese troops invaded Chaozhou in 1939‚ factories were closed and schools
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Best segment is freedom lovers. The Ford Ka was scheduled for launch at the Paris Motor Show in October 1996. But Brand Manager‚ Gilles Moynier‚ needed to decide on the target market for the new product. The car industry was traditionally segmented into size tiers‚ but Europe’s market for small cars was changing rapidly and even alternative segmentations did not reveal a clear target for the Ka. This case introduces students to the fundamental marketing problem of market segmentation and target
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Determination of pKa James McDuffie ABSTRACT: In this lab‚ the pKa of unknown solution #4 was measured Introduction: This lab focused on the equilibrium constant‚ Ka. Ka is associated with chemical properties of acids. The equivalence point will be reached once the moles of OH- equal the moles of HA and once this point is reached‚ the PH changes very quickly. With the results‚ a titration curve should be produced. Experimental Section Materials and Methods: A buret with NaOH solution
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Exercise 10: Acid/Base Balance Worksheet Assignment Due: Week 2 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.38 At 40 seconds‚ pH = 7.38 At 60 seconds‚ pH = 7
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4.3 Exercise 4 - Titrations and indicators 1. 20 cm3 of methanoic acid (Ka = 1.8 x 10-4 moldm-3) of concentration 0.10 moldm-3 is titrated against sodium hydroxide of concentration 0.05 moldm-3. a) Calculate the pH of the solution: i) initially ii) after 10 cm3 of the alkali has been added iii) after 20 cm3 of the alkali has been added iv) after 30 cm3 of the alkali has been added v) after 50 cm3 of the alkali has been added b) Sketch a pH titration
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TITTLE: An essay on development indicators describing the following indicators that may be used to explain levels of development within countries: (a). (b). (c). Gross National Product (GNP) Child (Under- five) Mortality Rate Human Development Index (HDI) TABLE OF CONTENTS 1. Introduction 2. Defining Development Indicators 3. Gross National Product 3.1 Advantages of GNP 3.2 Disadvantages of GNP 4. Child (under - Five) Mortality 4.1 Advantages of child (under-five) Mortality 4.2 Disadvantages
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Lab 7—Determination of Total Carbohydrates Using the Phenol-Sulfuric Acid Method This lab introduced the students to analyzing carbohydrate content using a spectrophotometer and phenol-sulfuric acid methods. Virginia Smith 983976633 Lab Partner: Jeff Martz Due Date: 3-22-11 Introduction The objective of this lab was to have students use a spectrophotometer to analyze the carbohydrate content in the sample. Phenol-sulfuric acid methods
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A Project on Study of Economic Indicators and its Impact on India INDEX Sr. No. | Content | 1. | Introduction. | 2. | Rationale of Study. | 3. | Objective of the study. | 4. | Literature Review. | 5. | Hypothesis | 6. | Method. | 7. | Research methodology | 8. | Sample Size. | 9. | Tools and techniques. | 10. | Research tools. | 11 | Procedure & data collection. | 12. | Data analysis and interpretation. | 13. | Suggestions and recommendations. | 14. | Bibliography
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other countries. Methods of analysis will include the extensive analysis of valid secondary economic data‚ regarding economic indicators ranging from GDP to population size. Economic indicators are various strands of data that provide knowledge and information on how global economy is operating. An economist might use economic indicators as compass to direct themselves‚ and to predict future economic outcomes. Macroeconomists is the study of economic indicators‚ these indicators show economist
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