...BTEC L3 Extended Diploma Health & Social Care 2014/15 |Name of unit |Assessor | |U7 Sociological Perspectives for Health and Social Care | | | |J Gurney | |Assignment title Assignment 2 |Verifier |Date | | |B. El-Fares |12/10/10 | |Date issued: 25th Nov 2014 | |Submission date 6th Jan 2015 | |Scenario | | ...
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...Nemneet Dhather Chemistry 4th Period Additivity of Heats of Reaction: Hess’s Law Introduction In this experiment, we will learn how to use a Styrofoam-cup colorimeter to measure the heat released by three reactions. To do this experiment we need to know about heat which is energy that is being moved because of temperature change between two things. Enthalpy which is a special energy function to make the process of finding how much energy is released or absorbed by a given reaction. Enthalpy is presented by Δ H or Q. Δ represents “a change in” and H represents” heat”. Q represents energy required. To know the reactions presented we must know what the meanings of, exothermic which means releasing heat and endothermic which means to absorb heat. The equation to enthalpy is Q = S x M x Δ T. The Q represents energy required. S represents specific heat capacity. M represents mass of sample in grams and Δ T represents a change in temperature in Celsius degrees. To measure energy we have to know what to measure it by and that is by the joule (calorie). Joule (used to describe heat) is from an SI unit that represents calorie, the amount of energy necessary to increase the temperature of one gram of water by one Celsius degree, which is equal to 4.184 joules. One of the most important features of enthalpy is that it is a state function. This is where Hess’s law principle comes in to play which says, whether the reaction takes place in one step or series of steps the change...
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...the essentials of Linda Null and Julia Lobur JONES AND BARTLETT COMPUTER SCIENCE the essentials of Linda Null Pennsylvania State University Julia Lobur Pennsylvania State University World Headquarters Jones and Bartlett Publishers 40 Tall Pine Drive Sudbury, MA 01776 978-443-5000 info@jbpub.com www.jbpub.com Jones and Bartlett Publishers Canada 2406 Nikanna Road Mississauga, ON L5C 2W6 CANADA Jones and Bartlett Publishers International Barb House, Barb Mews London W6 7PA UK Copyright © 2003 by Jones and Bartlett Publishers, Inc. Cover image © David Buffington / Getty Images Illustrations based upon and drawn from art provided by Julia Lobur Library of Congress Cataloging-in-Publication Data Null, Linda. The essentials of computer organization and architecture / Linda Null, Julia Lobur. p. cm. ISBN 0-7637-0444-X 1. Computer organization. 2. Computer architecture. I. Lobur, Julia. II. Title. QA76.9.C643 N85 2003 004.2’2—dc21 2002040576 All rights reserved. No part of the material protected by this copyright notice may be reproduced or utilized in any form, electronic or mechanical, including photocopying, recording, or any information storage or retrieval system, without written permission from the copyright owner. Chief Executive Officer: Clayton Jones Chief Operating Officer: Don W. Jones, Jr. Executive V.P. and Publisher: Robert W. Holland, Jr. V.P., Design and Production: Anne Spencer V.P., Manufacturing and...
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