Chemistry 2 Jorge Nuñez Ms. Principe / Period 2 February 8th‚ 2011 Aim: How are we going to determine the empirical formula of a compound? Do Now: 1) What is the percent by mass of oxygen in H2C2O4? H2 = 2(1) = 2 ; C2 = 2(12) = 24 ; O4 = 4(16) = 96 Gram Formula Mass = 90 Percentage of Oxygen = 6490 x 100 = 71% 2) Calculate the percentage of water: -Mass of empty crucible and cover = 11.7g -Mass of crucible‚ cover‚ and hydrate before heating = 14.9g -Mass of crucible
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What chemical compounds does the human body consist of? Oxygen (65%) and hydrogen (10%) are predominantly found in water‚ which makes up about 60 percent of the body by weight. It’s practically impossible to imagine life without water. Carbon (18%) is synonymous with life. Its central role is due to the fact that it has four bonding sites that allow for the building of long‚ complex chains of molecules. Moreover‚ carbon bonds can be formed and broken with a modest amount of energy‚ allowing
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THE CMC-HOOTERS MANAGEMENT MANIFESTO" GUIDE TO HOOTERS RESTAURANT OPERATIONS EXCELLENCE By James E. Cornett III‚ with J. Philip Cornett All Rights Reserved Copyright 1998 Created: December 1996 Last Updated 7-16-2010 MANAGER RESPONSIBILITIES This memo will highlight responsibilities for the Hooters Manager position. Many duties are for the position of General Manager. However‚ any "assistant" manager performing these duties well will progress and perform much better than one just
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In the 1970‚ gays from all over came to live in San Francisco which was thought of as a paradise. Carl Wittman shatters this perception in his first sentence from Refugees from Amerika: A Gay Manifesto‚ by saying that "San Francisco was a refugee camp for homosexuals"‚ completely flipping previous perceptions. Wittman utilizes the TSIS strategy of "they say‚ I say" in his essay to illuminate his point that being gay in Amerika is not how it seems. Wittman‚ in the very first page of his article
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Jessica Freeland HIS 102 Mr. Wiest March 4‚ 2018 Envisioning World Civilizations 23.1 Karl Marx and Friedrich Englels‚ "The Communist Manifesto" What was meant by "The history of all hitherto existing society is the history of class struggles." Is that all social history shows a constant struggle between the First class and working class. The working class has always struggled to merely survive. What makes the current struggle differ from before the Bourgeoisie
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Ultrasonic Investigation on the Distorted Diamond Chain Compound Azurite P T Cong1‚ B Wolf1‚ U Tutsch1‚ K Remović-Langer1‚ J Schreuer2‚ S Süllow3‚ and M Lang1 1 Physikalisches Institut‚ Universität Frankfurt‚ SFB/TR49‚ 60438 Frankfurt(M) 2 Institut für Mineralogie‚ Ruhr- Universität‚ 44780 Bochum 3 Institut für Physik der Kondensierten Materie‚ TU Braunschweig‚ 38106 Braunschweig E-mail: cong@physik.uni-frankfurt.de Abstract
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PRACTICAL REPORT NAME: ROXANNE STUDENT NO: 24681012 MODULE CODE: MCHE 321 EXPERIMENT NO: 2 TITTLE: KINETICS 2: TEMPERATURE OF THE REACTION: OXALIC ACID-POTASSSIUM PERMANGANATE REACTON Title: Temperature of the reaction: Oxalic Acid-Potassium Permanganate Reaction System Author: Miss Cleopatra Saul Abstract: The purpose of this experiment is to determine the rate of a chemical reaction (potassium permanganate‚ KMnO4‚ + oxalic acid‚ H2C2O4) as the concentrations are varied and to determine
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Experiment No. 1: MELTING POINT AND BOILING POINTS OF ORGANIC COMPOUNDS ABSTRACT The properties of organic compounds depend on their chemical structures. Intermolecular forces of attraction affect physical properties such as melting and boiling point. Through the Thomas Hoover apparatus‚ the melting point of 8 test compounds was determined. Salicylic acid exhibited the highest melting point while naphthalene‚ the lowest. The stronger the intermolecular forces of attraction‚ the higher the melting
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Properties of life‚ Basic Chemical Terminology‚ Molecules and Compound of a cell Properties of life: All living things are made of cells and keep certain characteristics in common. All living things are divided into several characteristics: order‚ reproduction‚ growth and development‚ energy processing‚ respond to the environment‚ regulation and evolution. Cells are either made of prokaryotic or eukaryotic. Prokaryotic is simple‚ small and lacking membrane-enclosed membrane. Eukaryotic
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Abstract: The purpose of this experiment was to examine how the compound action potentials propagate down the sciatic nerve of a frog based on varying stimuli. Before the nerve could be tested it needed to be extracted from the thigh of the frog and then submerged in saline. Several varying stimuli were used and recorded by a software package. The second experiment requires a constant stimulus with varying reference pin locations. From this the velocity of the action potential propagated can be
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