delivery of 23 ml. of titrant Part A) Reaction is: HNO2 + OH- NO2- + H2O Ka for Nitrous acid = 7.2E-4 Kw = Ka*Lb Kb = 1.0E-14/7.2E-4 Kb = 1.38E-11 Moles of base: (0.15)*(0.022) = 3.3E-3 moles 1:1 Ratio‚ So‚ Moles of acid = 3.3E-3 moles NaOH: (0.005)*(0.15) = 7.5E-4 moles HNO2: 3.3E-3 – 7.5E-4 = 2.55 E-3 moles Using Henderson- Hassel Balch equation: Ph = 4.752 + log(7.5E-4/2.55E-3) Ph =4.21 Part B) Ph = 4.752
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substitute quarter back‚ they more than made up for the Teddy Bridgewater injury. Jerick McKinnon and Matt Asiata are not Adrian Peterson‚ but they make up for his absence with different talents. Trae Waynes and Mackenzie Alexander have both filled in as corner back this year‚ and the team has rotated players at tackle seemingly all season without any issue. Once I found out that Adrian Peterson was injured I was worried for the team itself because they might have less wins. However‚ I was proved wrong
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happened instantly; a connection almost effortless. A prestigious adult novelist‚ Adrian‚ fell in love with Elizabeth‚ a budding young actress. Adrian’s short temper and Elizabeth’s calm nature seemed to make for the perfect couple. Little did they know they would create a baby girl with the same short temper as her father. On one of many festive evenings that the couple shared‚ Elizabeth conceives a child with Adrian. His semen entered her vagina and the sperm traveled through the cervix and body
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neutralization reaction is caused by the combination of H3O+ and OH- ions. In order to determine the concentration of an unknown acid and base‚ a method called acid-base titration is used. The end of the titration has been reached when the moles of acid equals the moles of base. This is called the equivalent point. However‚ end point os the actual point that is reached in neutralization reaction. End point is signalled by the change in color of the solution because of the presence of pH indicator. The
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methods. Theory: This experiment requires us to use both the Gravimetric and Volumetric methods in order to acquire our percent composition. Since all gasses at Standard Temperature and Pressure contain one mole for every 22.4 L of gas‚ we can use stoichiometry to figure out how many moles of reactant we began with. Considering the room is at constant temperature change‚ the volume of the gas varies. Thus we convert the volume of gas used to STP conditions. Procedure:All means and materials were
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TAYLOR Taylor is the daughter of Adrian Stokes‚ an expert in Psychology of persuasion. In the story of Ads R Us‚ Taylor discovered that she had been lied to about the circumstances of her birth. She is not the natural child of Adrian Stokes and Kara Trent‚ but is the true daughter of Adrian Stokes. Since Taylor was six or seven‚ she was implanted with a series of scanning devices- all about her reactions to the world around her. Her parents had used the readings to rank persuasive techniques for
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Producing Isoamyl Acetate from Isoamyl Alcohol and Acetic Anhydride through Esterification Racquel Erica D.G. Isada‚ Jannah B. Juan*‚ Moses Isaiah L. Koh and Hedder A. Lim Department of Biology‚ College of Science University of Santo Tomas‚ España Street‚ Manila 1051 Date Submitted: August 13‚ 2014 Abstract: In this experiment‚ the synthesis of Isoamyl acetate from Isoamyl alcohol and Acetic anhydride was prepared with the process of Esterification. By using the reflux technique‚ extraction
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large amount of solute‚ or dilute if contains a small amount. Molarity Molarity is the number of moles of solute per litre of solution. It is abbreviated with the symbol M‚ and is sometimes used as a unit of measurement‚ e.g. a 0.3 molar solution of HCl. In that example‚ there would be 3 moles of HCl for every 10 litres of water (or whatever the solvent was). Molality Molality is the number of moles of solute per kilogram of solvent. It
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ANALYSIS OF ASPIRIN TABLETS The aim of this investigation is to determine the percentage by mass of aspirin aspirin present in different commercial preparations and to find out‚ which the best value is‚ using a neutralization reaction followed by a direct titration with NaOH. Chemicals Used: 100 ml of distilled water in a wash bottle 50 ml of 0.100 M NaOH 40 mL of 96% ethanol phenolphthalein as an indicator (3 drops per titration) 325 mg non buffered aspirin tablets Materials Used: One
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chaos occurs and bad things happen when the Stoats and Weasels overtake Toad Hall. The Stoats and Weasels disliked Toad‚ and didn’t want him to return. Despite what the stoats and Weasels though Mole‚ Rat and Badger stood up for Toad‚ they knew Toad would return somehow and hoped that he would. Badger and Mole stayed out keeping an eye on Toad hall‚ trying to figure out what the Weasels were doing and planning ways to win back Toad hall. "Those two poor devoted animals have been camping out in the open
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