BUFFER SOLUTION (ACID) An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt. Objectives: 1. Measure the pH of the unknown solution first with indicators and then with pH paper. 2. compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated
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Chapter 7 Activity-Based Costing: A Tool to Aid Decision Making Solutions to Questions 7-1 Activity-based costing differs from traditional costing systems in a number of ways. In activity-based costing‚ nonmanufacturing as well as manufacturing costs may be assigned to products. And‚ some manufacturing costs—including the costs of idle capacity--may be excluded from product costs. An activity-based costing system typically includes a number of activity cost pools‚ each of which has its
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the fair value. Semos will record the removal of its net assets at their book values. Semos will record a gain on the sale of business of $500‚000 ($900‚000 – $400‚000). 6. Zone Group Cumulative Analysis Total Total Priority $ 20‚000 $ 20‚000 Nonpriority 500‚000 520‚000 (a) This price exceeds the fair value of all accounts and allows for goodwill. Current Assets (fair value) $120‚000 Land (fair value) 80‚000 Liabilities (fair value) (100‚000) Building & Equipment (fair
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5 Solution Preparation 1. Why should the solutions be prepared with 0.10M HCl used as solvent? a. What will happen to Fe3+ if the solution was not prepared using 0.10M HCl? b. Give the balanced equation for the 1st hydrolysis of Fe3+. c. What is the color of the product of 1st hydrolysis of Fe3+? d. What is the effect of the product of 1st hydrolysis to the absorbance of the solution? Determination of Analytical Wavelength 2. Why should the solution with
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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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CHAPTER 8 Linear Programming Applications Teaching Suggestions Teaching Suggestion 8.1: Importance of Formulating Large LP Problems. Since computers are used to solve virtually all business LP problems‚ the most important thing a student can do is to get experience in formulating a wide variety of problems. This chapter provides such a variety. Teaching Suggestion 8.2: Note on Production Scheduling Problems. The Greenberg Motor example in this chapter is largest large
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customer focus and trust. Further‚ it is seen that ‘spoke’ stores tend to break even in 2 years while ‘hub’ stores take 3 years. In addition to increasing sales‚ variable and fixed costs must be controlled. Increased competition must be tackled. Solutions must be found to hasten operational breakeven without losing customer focus. Options: Modify the hub/spoke model. Add more spokes so that there is greater market penetration. At the same time‚ there must be some hubs and distribution centre set
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Current and Noncurrent Assets ACC/400 Current and Noncurrent Assets Paper Accounting covers a multitude of areas‚ although most people think it just adding‚ subtracting‚ and receiving a total for something the company has bought or sold but of course it is not all it entails. Accounting by Merriam-Webster definition is “the system of recording and summarizing business and financial transactions and analyzing‚ verifying‚ and reporting the results” (Merriam-Webster Incorporated‚ 2012). Accounting
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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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