Anna Powell 2nd I.Title: Acid-Base Titrations AP Chemistry Laboratory #6 II.Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant‚ Ks‚ of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus
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a portion of itself to a large number of diversified investors. What occurs in this case is named IPO (Initial Public Offering): a security is sold to the general public for the first time‚ and thanks to this‚ usually‚ a liquid market will develop. The process is long and subject to strict rules and regulations. My purpose is that of going through the main steps of it‚ analysing pros and cons of IPOs and providing explanations for their apparent “underpricing”. I will mainly concentrate on the U
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Pro Infirmis represents the interests of disabled people at a political level. Firstly‚ their special needs are addressed and incorporated into the public debate. Secondly‚ informed Pro Infirmis the relevant target groups in politics and administration on the current situation of the disabled in Switzerland. The organization brings together social policy initiatives on a national‚ cantonal and municipal level and takes a position on proposed legislation. The aim is to reduce abuses and discrimination
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Extraction of R’-NH2 For both of the organic acid and organic base extraction‚ the addition of the respective inorganic acid or inorganic base (HCl or NaOH) to the three-component mixture caused an immiscible appearance of the solution in the separatory funnel. By briskly shaking the separatory funnel with the mixed components created a build up of pressure which was released through the stopcock forming small disappearing bubbles within the tip of the separatory funnel. Once the funnel was placed
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Why did Prada IPO in HONG KONG? Prada is joining the parade of foreign companies listing in Hong Kong rather than their home markets. As the only Chinese exchange fully open to foreign investors‚ Hong Kong has benefited as global investors shift more funds toward China and other emerging markets in search of better returns than they can find in the developed world‚ for three main reasons. 1) Listing in Hong Kong provides access to otherwise unreachable Chinese investors and moreover can serve as
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BasesLewis acids and bases play an important role in chemical reactions because‚ except oxidation-reduction reactions‚ almost every reaction could be categorized as an acid-base reaction. Bases in water solutions show certain specific characteristics: bitter taste‚ feel slippery‚ and turn litmus paper blue. Acids in water solutions show these most common characteristics: sour taste‚ react with metals‚ and turn litmus paper red. The understanding of chemical reactions‚ such as acid and base interactions‚
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Two key factors that contribute to the ease of deprotonation are the polarity of the H—A bond and the size of atom A‚ which determines the strength of the H—A bond. Acid strengths are also often discussed in terms of the stability of the conjugate base. Sulfonic acids‚ which are organic oxyacids‚ are a class of strong acids. A common example is toluenesulfonic acid (tosylic acid). Unlike sulfuric acid itself‚ sulfonic acids can be solids. Superacids are acids stronger than 100% sulfuric acid. Examples
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Purpose: To find out if the Unknown substances are bases or acids. Materials: goggles aprons paper for data table graduated cylinder unknown I substance beakers/test tubes stirring rod litmus paper pH indicator paper pH color chart phenolphthalein scoopula eye-dropper digital pH meter magnesium ribbon calculator unknown II substance forceps sodium bicarbonate Procedures: Test the pH of the Unknown substances with litmus paper and pH indicator paper and match to color chart
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avoided if possible. Secure Base Parents are the secure base for their children; as a secure base the child is able to explore the world and is assured that
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Go Daddy pulls its IPO filing! Why I decided to pull it. Tuesday‚ August 8‚ 2006 At 2 PM today (Tuesday‚ August 8‚ 2006) I announced at a meeting broadcast to Go Daddy’s 1200+ employees that The Go Daddy Group was officially withdrawing its registration with the SEC to become a public company. We just finished our best quarter - ever! This decision comes after the best quarter in the company’s history. During the 2nd quarter The Go Daddy Group Inc. had GAAP revenue of $56‚985‚000‚ a net accounting
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