Alana Rogers Date of experiment:11-20-13 Date submitted: 11-23-13 Determination of Water Hardness Using a Titrator Purpose: This purpose of this experiment was to determine the hardness of the local water supply. Be familiar with using a titrator. To tell wether your water is hard or soft. Hard water however does not create a threat‚ but is bad for your pipes causing them to crust. To measure water’s “softness” you are truly measuring the amount of CaCO3 in the water. Procedure: Assemble
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Experiment IV Solubility of Dissolved Oxygen Purpose To demonstrate the effect of partial pressure‚ temperature and salinity on the solubility of dissolved oxygen and to demonstrate the interference of nitrite in dissolved oxygen analysis by the Winkler Method. To demonstrate the use of the oxygen electrode and the difference between activity and concentration. References 1. Mancy‚ K. H.‚ Jaffe‚ T.‚ "Analysis of Dissolved Oxygen in Natural and Waste Water‚" USDHEW Public Health Service
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Determination of nitrite and phosphate Mech-1103 assignment 2 C.SUNGKUR 10/20/2016 STUDENT ID: 1615715 Faculty of engineering Title: Determination of concentration for unknown solutions of nitrite and phosphate. Author: C. SUNGKUR Student id: 1615715 Date of submission: 20/10/2016 Submitted to: Mr. Y.SEECHURN ABSTRACT When primary aromatic amine and nitrous acid react together‚ it results in a diazonium compound and this process is called diazotization
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Accred Qual Assur (2005) 10:172–176 DOI 10.1007/s00769-005-0914-6 PRACTITIONER’S REPORT V. Kmecl J. SuÐin ˇˇ L. Zupancic-Kralj Validation of analytical methods used for determination of nitrate in soil Received: 7 April 2004 Accepted: 3 November 2004 Published online: 24 March 2005 Springer-Verlag 2005 V. Kmecl ()) · J. SuÐin Agricultural Institute of Slovenia‚ Hacquetova 17‚ 1000 Ljubljana‚ Slovenia e-mail: veronika.kmecl@kis.si Tel.: +386-1-2805164 Fax: +386-1-2805255 ˇˇ L. Zupancic-Kralj
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Determination of the Solubility Product Constant of Calcium Hydroxide Introduction The equilibrium constant for the solubility equilibrium between an ionic solid and its ions is called solubility constant [1] ‚ Ksp of the solute. For example‚ the solubility product is defined by MxAy(s) ⇋xM(aq)y++ yA(aq)x- (1) Where M is the metal cation‚ A is the anion‚ x and y are the corresponding charges of the ions. The equilibrium expression is Ksp=[MY+]x[AX-]Y (2)
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Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy Curtis M. Franklin Thursday‚ February 14‚ 2013 ABSTRACT An ice calorimetric measurement was used to determine that a reaction involving solid magnesium metal and 1.00M sulfuric acid produces an experimental a value of ∆H = -226 ± 28 kJ/mol at 0°C. This is about 48.4% lower than the expected value reported at 25°C. Introduction Many chemical reactions exhibit themselves by exchanging heat energy‚ either be absorbing
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was self-determination‚ the belief that all people have the right to choose their political destiny free from the interference of any external parties. Naturally‚ the announcement of self-determination was met with a wave of optimism amongst colonised nations like Vietnam‚ Poland‚ India‚ and Egypt. Yet this optimism was quickly stamped out by the Wilson administration’s inconsistent application of self-determination. As a result‚ this essay asserts that in Wilson’s mind‚ self-determination only applied
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Being a part of a group of children having to adapt after being trapped on a island with no surrounding civilization is an unimaginable situation. However‚ William Golding shows just how terrifying it can be in his novel‚ Lord Of The Flies‚ by his use of symbols to represent hardships. The main symbols‚ which best portrays characteristics are the fire and the conch; symbols leadership and confidence. <br> <br>Ralph feels the need to create a better place as he attempts to get everyone home. Although
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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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APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES D. E. BIACORA DEPARTMENT OF MINING‚ METALLURGICAL AND MATERIALS ENGINEERING COLLEGE OF ENGINEERING‚ UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY‚ PHILIPPINES DATE PERFORMED: 19 November 2013 INTRODUCTION Analytical chemistry involves the separation‚ identification and determination of amounts of components in a particular sample. Accuracy and precision are important in data acquisition
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