Title: pH and buffer solutions Aim This experiment was carried out to determine the role of buffer solution and the factor which affect the buffer capacity. Besides‚ this experiment was carried out to investigate the solubility of protein casein over a range of pH concentration. This experiment also was carried out to determine the isoelectric point of the casein and the effect of the isoelectric point toward the casein solution. Methods Verification of the Henderson-Hasselbalch equation
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Purpose The purpose of this experiment is to find out the molarity of each solution while finding out how many grams of sodium chloride we have. Materials 1. Wire gauze 2. tongs 3. Burner 4. balance 5. Matches 6. hot hands 7. ring stand 8. ring clamp 9. graduated cylinder 10. evaporating dish Procedure Steps: 1. Mass the evaporating dish 2. Record how many mL of solution you add into the evaporating dish then mass them together. 3. Set the evap. dish on
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AP Chem Exam - ‘98 1. Solve the following problem related to the solubility equilibria of some metal hydroxides in aqueous solution. (a) The solubility of Cu(OH)2(s) is 1.72 x10–6 g/100. mL of solution at 25° C. (i) Write the balanced chemical equation for the dissociation of Cu(OH)2(s) in aqueous solution. Cu(OH)2 Cu 2+ + 2 OH – (ii) Calculate the solubility (in mol/L) of Cu(OH)2 at 25 °C. (1.72 x10–6 g/0.100 L)(1 mol/97.5 g) = 1.76 x10–7 mol/L (iii) Calculate
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of thioacetamide TS and 1 mL of glycerin base TS‚ and heat in a boiling water bath for 20 seconds. Use the mixture immediately. Lead Nitrate Stock Solution— Dissolve 159.8 mg of lead nitrate in 100 mL of water to which has been added 1 mL of nitric acid‚ then dilute with water to 1000 mL. Prepare and store this solution in glass containers free from soluble lead salts. Standard Lead Solution— On the day of use‚ dilute 10.0 mL of Lead Nitrate Stock Solution with water to 100.0 mL. Each mL of Standard Lead
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Solution Focused Therapy or Brief Therapy is a counselling technique that focuses on solutions in the present and future instead of the past. It is a short-term goal focused approach that moves clients away from their problems to solutions. Solution focused therapy is based on the idea that to help clients focus on things related to how change happens rather than concentrating on how problems develop. Solution focused therapy focuses on the future and how life will be better when their goals
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traced back to 1994. The company was facing problems in controlling and improving service quality and operation performance. This essay will stress on introducing the SPC (statistical process control) to DAV and providing suggestions on improving both the SPC and the company’s operation performance. The five questions required are covered and allocated into different parts of the essay. DAV: Situations and Problems 1. Background Information 1) DAV was one of the world’s largest insurance
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Solutions – Chapter 5 Chapter 5 Financial Analysis Question 1. Which of the following types of firms do you expect to have particularly high or low asset turnover? Explain why. Supermarket—High asset turnover. Supermarkets tend to be high volume businesses. Many of the food products in supermarkets are perishable‚ and freshness is often used to differentiate products‚ forcing a certain amount of inventories turnover. The typical consumer buys groceries on a regular basis‚ guaranteeing grocery
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This file contains the exercises‚ hints‚ and solutions for Chapter 1 of the book ”Introduction to the Design and Analysis of Algorithms‚” 2nd edition‚ by A. Levitin. The problems that might be challenging for at least some students are marked by ; those that might be difficult for a majority of students are marked by . Exercises 1.1 1. Do some research on al-Khorezmi (also al-Khwarizmi)‚ the man from whose name the word “algorithm” is derived. In particular‚ you should learn what the origins of the
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Equipment ASSIGNMENT CLASSIFICATION TABLE (BY TOPIC) Topics Questions Brief Exercises 1‚ 2‚ 3‚ 4‚ 5‚ 13 Concepts Problems for Analysis 1. Valuation and classification of land‚ buildings‚ and equipment. 1‚ 2‚ 3‚ 4‚ 6‚ 7‚ 12‚ 13‚ 15‚ 21 2. Self-constructed assets‚ capitalization of overhead. 5‚ 8‚ 20‚ 21 4‚ 6‚ 12‚ 16 3. Capitalization of interest. 8‚ 9‚ 10‚ 11‚ 2‚ 3‚ 4 13‚ 21 4‚ 5‚ 7‚ 8‚ 9‚ 10‚ 16 1‚ 5‚ 6‚ 7 3 4. Exchanges of assets. 12‚ 16‚ 17 8‚ 9‚ 10‚ 11‚ 12 3‚ 11‚ 16‚ 17‚ 18‚ 19
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proposal was aimed to complete the goal of answering questions about the system of three unknown red solutions. Based on the experiments conducted and the data collected‚ I am able to conclude information about the three red solutions that will lead to a possible identity of each red solution. Starting with red solution #1‚ we are able to conclude that there are no nanoparticles in this solution and that is a molecular compound due to the fact that when potassium iodide was added‚ there was no color
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