Activity 11 Acids and Bases I. Objectives * To identify some acids and some bases which are used in common household products. * To construct an operational definition of an acid and a base‚ using the characteristic properties of those substances. II. Procedure A. For acids * Place 2ml each of dilute acetic acid‚ hydrochloric acid‚ sulfuric acid‚ carbonated drink (colorless) and calamansi juice extract in separate test tubes. Test every solutions with
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End-of-Chapter Material – Questions and Solutions Chapter One Business Now: Change Is the Only Constant Review Questions 1. What factors contribute to the rapid pace of change in business? Is the pace likely to accelerate or decrease over the next decade? Why? - The factors that contribute are capital‚ natural resources‚ human resources‚ entrepreneurship‚ and technology. Yes it is likely that the pace will accelerate‚ all of these items are needed for a business to continue 2. What
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Our first meeting will be today. Use this method if you’d prefer to copy and paste your paper into a form. Use this method if you’d prefer to copy and paste your paper into a form. Use this method if you’d prefer to copy and paste your paper into a Our first meeting will be today. Use this method if you’d prefer to copy and paste your paper into a form. Use this method if you’d prefer to copy and paste your paper into a form. Use this method if you’d prefer to copy and paste your paper into form
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Describe a mingle activity you might create for a new class of intermediate level students to help them introduce themselves to each other. The best way to help students mingle with each other and enhance their proficiency in the English language is by using ice-breaker activities. This effectively encourages the participants to interact with each other freely. An activity which might be done is a ‘getting to know you’ activity where the participants will be given a certain period of time to gather
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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Experiment 6 Preparation and reactions of boric acid Objectives: To prepare boric acid from sodium tetraborate (borax) To carry out tests on the prepared sample of boric acid To study the physical and chemical properties of boric acid Introduction: Boron is an element in the p-block of the periodic table. It has the electron configuration of 1s22s22p1 and is in group 3 or goup 13 (IUPAC classification). In nature‚ it consists of two isotopes 10B (19.6%) and 11B (80.4%). Boron is bonded
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TEABAG EXTRACT AS AN ALTERNATIVE FOR INK An Investigatory Project Chapters 1- 3 Submitted by: Alfonso‚ Manuela Fairbanks Garcia‚ Tonica Paga Cho‚ Jung Hun Lat‚ Manuel Miguel Feliciano November 2013 Chapter I Introduction A. Background of the Study The group will conduct the study because the group noticed that teabag extract is dark in colour and it can be use to make ink‚ and also the group noticed that teabags are made from natural resources. Some kinds
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SELECTION TEST (PSYCHOLOGICAL TEST) A psychological test is an objective & standardized measure of a sample behavior from which inferences about future behavior & performance of the candidate are drawn. Tests provide a systematic procedure for sampling human behavior. These test are based on the assumption that no two individuals are equal in terms of intelligence‚ attitudes‚ personality‚ & other relate traits ones characteristics with others are measured through these tests. Types of Selection
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Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
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Directions: Imagine yourself as one of the children in the liberation photograph. Complete the three paragraphs as a first-person narrative from his or her point of view. Paragraph 1: Why were you persecuted? Paragraph 2: Where did you go? Describe your experience at the camp. What happened to your family? How did the United States respond to your experience? Paragraph 3: What will your future bring? Predict what you think will happen to you now that you have been liberated. How has the world
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