QUESTIONAIRE 1. With increase in temperature viscosity of a liquid a) Increases b) Decreases c) Remains constant d) May increase or decrease depending on liquids 2. Cavitation occurs in a centrifugal pump when a) suction presuure < vapor pressure of liquid at that temperature b) suction presuure > vapor pressure of liquid at that temperature c) suction pressure = vapor pressure d) suction pressure = developed head 3. Centrifugal
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Since these insects feed on human and pet foods, they serve as vectors for disease transmission. Chemical insecticides are usually used in many households in order to control these pests. But the high price and health problem from branded chemical insecticides gives dilemma to Filipino household. Respiratory diseases can also result from continuous use of these insecticides especially since chemical substance from the product are inhaled by a person. This study seeks the possibility of using the
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Enzymes are proteins that act as catalysts to accelerate biochemical reactions. Although many chemical reactions are thermodynamically feasible, they are often not spontaneous and require energy, termed “activation energy”, which is the minimum amount of energy that two molecules must have in order for them to start to react. In the laboratory, activation energy can be applied in the form of heat to increase the kinetic energy of the molecules to initiate the reaction. Clearly, thermal activation
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CHAPTER 2 2.3) [pic] [pic][pic] [pic] [pic] ( [pic], [pic] At T = 0 K, S = 0 J/K ( the slope of the G versus T curve at T = 0 is zero. [pic] (2.3-1) Where, [pic]. As CP is always positive (i.e. when heat is supplied the temperature of all materials increases), the RHS of equation (2.3-1) is negative. This implies that the curvature of the G versus T curve ([pic]) is negative (convex upwards). [pic] 2.4) Data: [pic] There are N0 sites and N0/2 A atoms and N0/2 B atoms have
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CARIBBEAN EXAMINATIONS COUNCIL Caribbean Secondary Education Certificate CSEC® CHEMISTRY SYLLABUS Effective for examinations from May–June 2015 CXC 21/G/SYLL 13 Published by the Caribbean Examinations Council. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means electronic, photocopying, recording or otherwise without prior permission of the author or publisher. Correspondence related to the syllabus
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SNC 2D Conservation of Mass Lab Activity Purpose: The purpose of this activity is to investigate whether mass is conserved during chemical reactions. Hypothesis: Write a hypothesis predicting whether or not the mass will be conserved during a chemical reaction. __________________________________________________________________ __________________________________________________________________ Materials: Safety Goggles 250mL Erlenmeyer flask plus rubber
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Terms and Conditions for rental of portable toilet units from Lone Star Johns, hereafter referred to as “LSJ” This is a legally binding service agreement for all Portable toilet units required at the project for its duration. This term hereof shall begin on the effective date and shall end when the portable toilet units are no longer required at the project of which the service address is a part. The portable toilet units leased hereby may ne moved to another project of the Customer if it is in
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Copper-catalysed selective hydroamination reactions of alkynes Shi-Liang Shi and Stephen L. Buchwald* The development of selective reactions that utilize easily available and abundant precursors for the efficient synthesis of amines is a long-standing goal of chemical research. Despite the centrality of amines in a number of important research areas, including medicinal chemistry, total synthesis and materials science, a general, selective and step-efficient synthesis of amines is still needed. Here, we describe
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4188 REV: NOVEMBER 30, 2011 V. KASTURI RANGAN SUNRU YONG Soren Chemical: Why Is the New Swimming Pool Product Sinking? Jen Moritz grimaced as she reviewed the February 2007 sales report for her company’s new Coracle product. In September 2006, Soren Chemical had launched Coracle, a new water clarifier for use in small recreational and household swimming pools. Moritz was responsible for marketing the new clarifier, which she believed was a superior product, but the results so far were discouraging
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Geography 101 University of Mississippi FAll 2010 Final exam: essay questions Please prepare a typed answer to each of the two essay questions below. Your answers are due in class on the day of the scheduled final exam. Each essay question is worth 30 points on the exam (total of 60 points). Answers for EACH question should be at least 500 to 750 words (2-3 pages). NOTE: you may not use the same example for different essay questions. Please be diverse in the examples
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