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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ACT 5733 – Advanced Managerial Accounting Fall 2014‚ On Line HW #2 Directions: Answer all four of the questions. Please submit your work in Word or PDF formats only. You can submit an Excel file to support calculations‚ but please “cut and paste” your solutions into the Word or PDF file. Be sure to show how you did your calculations. Also‚ please be sure to include your name at the top of the first page of your file. You can use any sources you wish‚ except for other people. Please be sure to document
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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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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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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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Rachel Bohnenberger Professor Van Doorn ENVS 150-002 30 January 2015 Critique Two In the first video‚ The Story of Solutions‚ the main focus was to shift attention from making more and more for the economy to making the economy better. It was described in the video that in order to make the economy better‚ we need to focus our attention on sustainability. One example given was banning plastic bags. Two methods were given on how to accomplish said task—the old method and the new method. The old
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Week 4 Individual Assignment: Synergetic Solutions Susana Pena COM 530 Mark Busby Univ. of Phoenix February 5‚ 2013 * Describe at least three internal and external forces of change for Synergetic Solutions. * * * The external forces of change for Synergetic Solutions include technology‚ economic shocks‚ and competition. Technology is the one force that has caused for companies in the technology business to stay innovated and have skills be up to date with the needs
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Generally Accepted Auditing Standards Paper University of Phoenix ACC 490 Auditing February 7‚ 2011 Generally Accepted Auditing Standards Paper Every auditor is expected to follow the standards of the industry while conducting audits for clients. The most widely used standards were originally established in the 1940s and were adopted by the Public Company Accounting Oversight Board PCAOB in 2003 and are referred to as the Generally Accepted Auditing Standards GAAS (Boynton & Johnson‚ 2006)
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Harmantaj sahota sahot111 103776105 Professor Oriet 10 march‚ 2013 Inventing solutions “To invent u need a good imagination and a pile of junk.” –Thomas Edison Inventing solutions and inventions is familiar to us in science and engineering. We use the word ‘invention’ in creative endeavours such as mathematics‚ music‚ literature and sometimes in fine art too. In a broader context invention can be
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