CHEM 1411 – General Chemistry I Practice Problems‚ Chapters 1–3 Chapter 1 – Chemistry: The Study of Change 1. Element‚ compound‚ homogeneous mixture (solution)‚ or heterogeneous mixture: a) orange juice b) brass c) 0.9% saline (NaCl) solution d) garden soil e) room air f) methane gas g) sodium metal h) N2 gas i) Cu(NO3)2 crystals (freshly-squeezed) 2. Define (some of these terms are found in Chapters 2 and 3): a) c) e) g) i) k) m) o) 3. b) d) f) h) j) l) n) compound physical change
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Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
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Chemical Formula Principles Chemical Formula is a system of chemical notation that was invented in 181 by John Jakob Berzelius. The system is based on the law of definite proportions”‚ states that all samples of a given chemical compound have the same elemental composition. It is also a way of expressing information about the proportions of atoms that constitute a particular chemical compound‚ using a single line of chemical element symbols‚ numbers‚ and sometimes also other symbols‚ such as
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CHEM 206- ORGANIC CHEMISTRY EXP 10-UNIMOLECULAR ELIMINATION REACTIONS Cansın Etli Lab Instructor: Emel Yılgör Experiment date:06.12.2010 Report Date: 20.12.2010 ABSTRACT In this experiment‚ the purpose was to investigate E1 elimination mechanism with the reaction of cyclohexanol to cyclohexene. The reaction was acid catalyzed dehydration of alcohol and with catalyst sulfuric acid cyclohexene was obtained from cyclohexanol. And the product
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Answer Paper for Science and Technology - II - Paper 4 Time: 2.0 Hrs.------------------------------------------------------------------------------------Max. Marks: 40 Note 1). All questions are compulsory. Note 2). All questions carry equal marks. Note 3). Draw neat and labelled diagrams wherever necessary. Important note from mySSC.in - In this ’Answer paper’‚ questions are displayed for your convenience. In actual exam‚ do not write the questions. Only answers are expected in answer paper
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Environ. Sci. Technol. 2010‚ 44‚ 7184–7192 Concentration‚ Chlorination‚ and Chemical Analysis of Drinking Water for Disinfection Byproduct Mixtures Health Effects Research: U.S. EPA’s Four Lab Study JONATHAN G. PRESSMAN‚† S U S A N D . R I C H A R D S O N ‚ * ‚‡ THOMAS F. SPETH‚† RICHARD J. MILTNER‚† MICHAEL G. NAROTSKY‚§ E. SIDNEY HUNTER‚ III‚§ GLENN E. RICE‚| LINDA K. TEUSCHLER‚| ANTHONY MCDONALD‚§ SHAHID PARVEZ‚| STUART W. KRASNER‚⊥ HOWARD S. WEINBERG‚# A. BRUCE MCKAGUE‚∇ CHRISTOPHER
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THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
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CHEM 104: General Chemistry II Spring 2014 Exam 1 Version A Instructions: 1. Do NOT open this exam until you are told to do so. Opening the exam before the start of the exam is considered an act of Academic Dishonesty. 2. All answers must be bubbled into the scantron answer sheet. 3. No credit will be given for answers written on this exam. 4. You must use a #2 pencil to bubble in the answers on your scantron. 5. This is a multiple choice exam consisting of 30 questions (7 pages). Each question
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Republic of the Philippines DEPARTMENT OF EDUCATION Region IV-A CALABARZON DIVISION OF LAGUNA Santa Cruz Grade 7 - Integrated Science Diagnostic Test – SY 2012-2013 Direction: Choose the letter of the best answer and write it on your answer sheet. If the answer is not among the choices write e. Quarter 1 1. Which of the following is an example of a solution? a. Vinegar b. Halo-halo c. Sand in water d. Oil in water 2. Which statement describes the solute? a. It is the solid formed in solution
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Organic chemistry studies carbon compounds‚ but a few carbon compounds such as carbon monoxide‚ carbon dioxide‚ metal carbonates‚ and carbon disulphide traditionally come under the umbrella of inorganic chemistry. INTRODUCTORY 1. Give the following for the compound propane C3H8: (a) Full structural formula (b) Skeletal formula 2. Draw all the possible isomers of hexane C6H14 and give the name of each. 3. Draw the structural formulae for each of the following alkanes: (a) 2‚2- dimethylbutane
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