molarity of EDTA and to determine the hardness of water by measuring the concentrations of calcium and magnesium in a water sample by titration. Abstract: The aim of this experiment was to determine the molarity of a sample of EDTA and then to use this sample to determine the hardness of a sample of water. This was done using a titrimetric method. This was standardized using calcium chloride. The calcium chloride was weighed‚ dissolved and diluted to a known volume. A buffer and indicator were added
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Gerona‚ Evelyn Chemical Reactions Experiment No. 7 Date Performed: Feb. 17‚ 2014 Date Submitted: Feb. 24‚ 2014 Mrs. Vitancol I. Theoretical Framework A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically‚ chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms‚ with no change to the nuclei (no change to the elements present)‚ and can often
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SERANGOON JUNIOR COLLEGE General Certificate of Education Advanced Level Higher 2 CHEMISTRY JC2 Preliminary Examination Paper 1 Multiple Choice Additional Materials: Data Booklet Optical Mark Sheet (OMS) 9647/01 23 August 2011 1 hour READ THESE INSTRUCTIONS FIRST On the separate multiple choice OMS given‚ write your name‚ FIN/NRIC and class in the spaces provided. Shade correctly your class and FIN/NRIC number. Eg. If your NRIC is S9306660Z‚ shade S9306660Z for the item “index number”. There
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|b. |sulfur(IV) oxide |d. |sulfur oxide | ____ 30. Name the compound CCl4 using the Stock system. |a. |carbon(IV) chloride |c. |carbon chloride | |b. |carbon tetrachloride |d. |carbon hypochlorite | ____ 31. Name the compound H2O
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Valenzuela City Science High School A. Marcelo St.‚ Dalandanan‚ Valenzuela City The Use of Coconut Shells (Cocos Nucifera mesocarp) As Green Activated Carbon Fiber For Muffler Air Filter Group Members: De Leon‚ Glenn Patrick C. Enmil Jr.‚ Rolando Manuel P. Santos-Diaz‚ Zoe Marie C. Suyat‚ Pauline Jirah A. Submitted to: Mr. Albert Tolentino Date Submitted: Aug. 10‚ 2011 Chapter 1: Introduction Statement of the Problem A. General problem: 1. How could we use
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SCH 4U1 FINAL EXAM REVIEW ATOMIC STRUCTURE AND MOLECULAR ARCHITECTURE 1. Describe the wave mechanical model of the atom. 2. Write the ground state electron configuration for Br. 3. Explain why the first ionization energy for Ne is significantly greater than Na. 4. Distinguish between ionization energy and electronegativity. 5. How does VSEPR Theory account for the fact that the bond angle in H2O is less than NH3? 6. Which of the following molecules are polar? Include diagrams
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1. In the first group of four reactions‚ Iron phosphate and calcium phosphate are the two products that are insoluble in water. In the three of the four reactions a cloudy white or yellow formed. This indicated the formation of a precipitate‚ caused by the generally insoluble phosphate anion. Potassium chloride‚ Iron nitrate‚ and potassium sulfate where the products which were soluble in water. With these products there was no evidence of a precipitate forming. 2. Based on the results from reactions
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This page intentionally left blank Copyright © 2008‚ New Age International (P) Ltd.‚ Publishers Published by New Age International (P) Ltd.‚ Publishers All rights reserved. No part of this ebook may be reproduced in any form‚ by photostat‚ microfilm‚ xerography‚ or any other means‚ or incorporated into any information retrieval system‚ electronic or mechanical‚ without the written permission of the publisher. All inquiries should be emailed to rights@newagepublishers.com ISBN (13) : 978-81-224-2652-6
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According to the Beer Lambert law‚ the concentration of the solution is directly proportional to the absorbance. The extinction coefficient relates the absorbance to concentration. It is specific for each individual compound and can be determined from the standard calibration curve by solving for ε‚ as I know the absorbance and concentration and can measure the width of the cuvette. Abs = ε bc In this equation‚ the absorbance is equal to the concentration of the CaCl2 (c)‚ multiply by the length
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bladder Urethra: passageway that conducts urine from the urinary bladder to the exterior List and describe the functions of the excretory system. Adjusting blood volume and blood pressure Regulating plasma concentrations of sodium‚ potassium‚ chloride‚ and other ions Stabilizing blood pH Conserving valuable nutrients Removing drugs and toxins from the bloodstream Explain the functions of the components of a nephron‚ and relate those functions to cellular and histological specializations
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