Abstract Three tests were performed to determine the identity of unknown number 34‚ a gram stain‚ citrate utilization test‚ and a urease detection test. These tests are explained in detail‚ and the method of performing the tests is described. The tests showed that the bacterium was gram-negative bacilli that did not utilize citrate‚ and the ability to hydrolyze urea using urease. These results indicate that the identity of unknown number 34 is Proteus mirabilis. Introduction Proteus mirabilis is a gram-negative
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Experiment 5- Standardization of NaOH and determination of Molarity of an unknown Acid Objectives 1. Preparation and standardization of a 0.1M NaOH solution 2. To learn the technique of titration 3. Determination of the concentration of an unknown diprotic acid. Introduction Titration can be traced to the origins of volumetric analysis‚ which began in the late eighteenth century. Study of analytical chemistry began in France and the first burette was made by Francois Antoine Henri
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Purpose: The purpose of this experiment is to determine the number of moles of water molecules of crystallization of a sample of hydrated Barium Chloride. This can be calculated using Gravimetric Analysis and to indirectly determine the percent composition of a hydrate by taking advantage of its chemical properties. Introduction: Gravimetric procedures are analytical methods in which the results are determined from the masses of starting materials and products. These methods
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Homework #1 (each 4 points) 1. At his death in 1790‚ Benjamin Franklin left 1‚000 pounds each to the cities of Boston and Philadelphia on the condition that they would not touch the money for 100 years. Boston’s bequest‚ which was equivalent to about $4‚600‚ had ballooned to $332‚000 by 1890. a. Determine the equivalent annual rate of return between 1790 and 1890. b. If the city of Boston had left this bequest in a fund earning 5% per year between 1890 and 1990‚ what would have been the value of
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The Grand Shrine of Ise is the probably most sacred or holy Shinto site in Japan. The shrine has been rebuilt in the same place every 20 years since the third or fourth century. Shinto‚ Japan’s unofficial national religion‚ is devoted to spiritual beings called “kami.” Shinto shrines were traditionally simple wooden structures built to house the kami and as a place to hold rituals and celebrations. Shinto’s holy places typically include natural formations‚ such as rocks‚ waterfalls‚ caves‚ forests
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Abstract The Clean Brite Company (CBC) Ltd and Scrubaway Allbrigte Ltd (SAL) are two Cleaning Product Supplier Company being to Merger into CBC. Company sale there product by Web‚ using e-commerce and also Tale sale by phone where customer have unable to buy product form web after merger two company looking some of problem one is distinct organizational cultures anther is the IS department do not satisfy other department and customer for that reason company decide to make a new “Home Order Processing
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Sodium chloride‚ also known as salt‚ common salt‚ table salt‚ or halite‚ is an ionic compound with the formula NaCl. Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. As the major ingredient in edible salt‚ it is commonly used as a condiment and food preservative. [edit] Properties Thermal conductivity of pure NaCl as a function of temperature has a maximum of 2.03 W/(cm K) at 8 K and decreases to 0.069 at 314
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Spectrophotometric determination of Ascorbic acid Concentration in an Unknown Solution Introduction: The naturally occurring organic compound with antioxidant properties is Ascorbic acid shortly referred as (AA). Normally the color of Ascorbic acid is white‚ but in some cases of impure samples it appears yellow in color. Ascorbic acid is solid in state. In water it dissolves well to give mildly acidic solutions. Ascorbic acid is one form ("vitamer") of vitamin C [1]. So‚ Ascorbic Acid (AA)
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Determination of an Unknown Concentration of Potassium Manganate using Colorimetry Introduction The purpose of this experiment is to conclude the concentration of an unknown solution using colorimetry to plot a calibration curve. Colorimetry measures the absorption of light at wavelengths within the visible region of the electromagnetic spectrum. It can be used to identify the unknown concentration of a solution in reference to a solution of a known concentration. When a solution appears
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MEMORANDUM From: To: Subject: Calcium Chloride Best Purchase for Deicing Enclosures: (1) Data Record (2) Data Treatment (3) Environment Impact Research After hours of vigorous examination‚ we have come to the conclusion that calcium chloride (CaCl2) would be the best deicer to use on a naval base over sodium chloride (NaCl) and ethylene glycol (C2H6O2). In order to melt ice‚ deicers lower the freezing point so that the ice melts at lower temperatures. CaCl2 has
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