Spectrophotometric Determination of an Equilibrium Constant Introduction: In this experiment‚ you will study the reaction between aqueous iron (III) nitrate‚ Fe(NO3)3‚ and potassium thiocyanate‚ KSCN. They react to produce the blood-red complex [Fe(SCN)]2+. Fe3+ + SCN- ( [Fe(SCN)]2+ The equilibrium constant expression may be expressed as: K = [pic] You will prepare a series of standard solutions that contain known concentrations of [Fe(SCN)]2+ and will determine
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Self-Determination in The Memoirs of a Geisha Memoirs of a Geisha tells the story of a young girl‚ Chiyo‚ who transcends her fishing-village roots to become one of Japan’s most appreciated geishas. It’s a story which brings much life into the characters of the book‚ using many different climaxes as well as conflicts to show the many different relationship of the characters. Chiyo goes through many hardships throughout the reading‚ but once finally accepting her fate‚ she is finally determined to
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Should We Abolish the Penny? The standard Abraham Lincoln penny has been around for almost one hundred years. It was created in 1909‚ because that year was the centennial (hundred year anniversary) of Lincoln ’s birth. People have many opinions about the penny both good and bad; however‚ the notion of not needing it is true and justifiable. What follows are‚ statistics‚ evidence‚ and results of a survey to support this claim. The penny is known for its copper features‚ and being worth a
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Spectrophotometric Methods: The Determination of Iron The goal of this laboratory experiment was the quantitative spectrophotometric determination of Fe (II) by using a calibration plot‚ which obeyed the Beer-Lambert Law. In order to determine the Fe (II) concentration‚ a series of solutions of known concentrations were made. The solutions were analyzed by the Ocean Optics spectrophotometer in order to determine their absorbance. The concentration of the unknown Fe (II) was determined by the “eye-ball”
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dogs housed at the shelters. The campaign ("Pennies for Pets") creates awareness of the Society’s mission and passion for our funy friends. The Society depends on the annual fund raiser to maintain the shelters‚ provide food and medical care for the orphaned cats and dogs in our community. The Society relies on local businesses‚ individuals‚ and students to solicit donations and promote the annual campaign. This year’s fund raiser was a huge success. Pennies for Pets created a strong liaison between
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Journal of Medicinal Plants Research Vol. 5(10)‚ pp. 2035-2040‚ 18 May‚ 2011 Available online at http://www.academicjournals.org/JMPR ISSN 1996-0875 ©2011 Academic Journals Full Length Research Paper Screening of chemical composition of essential oil‚ mineral elements and antioxidant activity in Pulicaria Undulata (L.) C. A. Mey from Iran Mehdi Ravandeh1‚ Jafar Valizadeh2*‚ Meissam Noroozifar1 and Mozhgan Khorasani-Motlagh1 1 Department of Chemistry‚ University of Sistan and Baluchestan
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DETERMINATION OF VITAMIN C CONTENT IN COMMERCIAL (CENOVIS) TABLET ABSTRACT In this experiment‚ the vitamin C content of a commercial tablet is determined and compared with the manufacturers’ specification. Vitamin C is water-soluble and is an enantiomer of ascorbic acid. (Commercial vitamin C is often a mixture of ascorbic acid and other ascorbates.) Ascorbic acid‚ C6H8O6‚ is a reducing agent that reacts rapidly with iodine (I2). As the iodine is added during the titration‚ the ascorbic acid is
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Complexometric Determination of Water Hardness Abstract: Create a standardized EDTA solution for use as a titration solution to determine the hardness of water from a single random sample. Introduction: Using a calibrated EDTA solution to determine water hardness from a random sample. Essentially the Na2EDTA solution reacts one to one with the mineral content of a sample of tap water and by use of a standardized solution a ppm estimation can be obtained for the hardness of water. Current knowledge
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Linn Bailey once said‚ “If you have discipline‚ drive and determination nothing is impossible.” If you put your mind to anything‚ and have confidence you can accomplish things. When you let the hard times get to you it will bring your confidence down. Determination will help you get through the hard times even if you don’t think you can overcome them. In the book No Safe Place‚ the author uses conflict to develop the theme; Determination is key‚ even if you are doing it all by yourself. For example
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Mg2+ Determination using EDTA Linh Nguyen Chem 1212L – 165 Feb 08 ‚ 2014 Purpose and Procedure: The purpose of this experiment is using Compleximetric titration and EDTA to determine the concentration of Mg2+ in solution; and also calculating the percent by mass of MgO in the unknown sample. This procedure results no significant deviations. The procedure for the experiment is from the lab manual referenced below Laboratory Experiments for Chem 1211L & 1212L (6e)
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