BUFFER SOLUTIONS CONTENTS 1. Introductions. 2. Principles of buffering. 3. Applications a. Simple buffering agents. b. "Universal" buffer mixtures. c. Common buffer compounds used in biology. 4. Buffer capacity. 5. Calculating buffer pH a. Monoprotic acids. b. Polyprotic acids. 6. Biblography. INTRODUCTION A buffer is an aqueous
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A buffer solution can maintains a narrow range of pH even when strong acid are added. In our experiment‚ we can see water is not a buffer‚ water can undergo very big changes when small amounts of strong acid or strong bases are added. When the strong acid‚ 100µl HCl was added into the dd water‚ the pH value changed from 7.38 to 5.83 which mean the dd water has turn into acid. The same phenomenon occurs while strong base‚ 100µl NaOH was added into the dd water. The pH value changed from 7.07 to 9
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OUTLINE SOLUTIONS Regression Modelling (ST2210) Internal test (30%) 12th November 2010 KNumber Name Course Duration: 90 mins Instructions: Answer all questions in the spaces provided – (you may use backs of sheets and/or additional paper if required) This is a CLOSED BOOK test. You can consult the test paper‚ KU tables and the attached output ONLY. You may use an approved calculator. Use a 5% level of significance (α = 5%) where appropriate. Fanfare International
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I. History North Park Group of Companies is a Chinese Restaurant managed by Raphael Soon (President) and Gabriel Soon (Vice President). It operates a chain of restaurants under the trade names NORTH PARK NOODLES‚ NEXT DOOR NOODLES‚ KOPI TIAM and MA CHICKEN MAMI. NORTH PARK NOODLE HOUSE INC. is a Chinese restaurant which food critiques rated as one of the top ten restaurants in Metro Manila. The company was born in September 6‚ 1994 and is under the creative leadership of the Soon brothers -
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POLITICAL CAMPAIGN PLANNING MANUAL A STEP BY STEP GUIDE TO WINNING ELECTIONS By J. Brian O’Day National Democratic Institute for International Affairs POLITICAL CAMPAIGN PLANNING MANUAL PREFACE In preparation for the 1995 Russian Duma elections‚ NDI political trainers Ken Payne‚ Kate Head‚ and Sheila O’Connell‚ along with Russian experts Aleksei Shustov and Oleg Nikishenkov wrote the Strategic Election Planning Manual. This manual has been one of the most popular publications in the National
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1.John is twice as old as his friend Peter. Peter is 5 years older than Alice. In 5 years‚ John will be three times as old as Alice. How old is Peter now? 2. John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time‚ the sum of their ages will be 58. How old is John now? 3. Joan is 3 times as old as her sister. In 3 yeas ‚ shee will be two years more than twice the age her sister will be then. What are their ages? 4. Kevin is 4 years older than
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Solutions for Homelessness This great nation of awesome power and abundant resources is losing the battle against homelessness. The casualties can be seen on the street corners of every city in American holding an "I will work for food" sign. Homeless shelters and rescue missions are at full capacity. There is no room at the inn for the nation’s indigent. Anyone who has studied this issue understands that homelessness is a complex problem. Communities continue to struggle with this socio-economic
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Fluid and Electrolytes Homeostasis t State of equilibrium in internal environment of body‚ naturally maintained by adaptive responses that promote healthy survival t Body fluids and electrolytes play an important role Water Content of the Body t Accounts for 60% of body weight in adult t 70-80% of body weight in infant t Varies with gender‚ body mass‚ and age Compartments t Intracellular fluid (ICF) t Extracellular fluid (ECF) l Intravascular (plasma) l Interstitial t Transcellular
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Maximum Points: 60 Grade: Let G be the smaller number between 6 and (achieved points+10)/10 Round G exactly to quarters of a grade to get your grade. Examples: 32 points give a 4.25‚ 31 points give a 4 Solution to Homework Set 1 Managerial Economics Fall 2011 Conceptual and Computational Questions 4 points 2. What is the maximum amount you would pay for an asset that gen- 2 pt for a erates an income of $150‚000 at the end of each of five years if the reasonable formula‚ opportunity cost of using
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Electrolytic Solutions Solutions are sometimes grouped according to their ability to conduct electricity. Substances whose solutions conduct electricity are called electrolytes and those that do not conduct electricity are called nonelectrolytes. Also electrolytes can be strong or weak. Under strong electrolytes we have NaCl and CaCl2 which are ionic compounds‚ HCI‚ HNO3‚ HBr and H2SO4 are under acids and NaOH‚ KOH‚ and LiOH are under bases. Weak electrolytes are ionic compounds and slightly
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