hem ESSENTIAL QUANTUM MECHANICS This page intentionally left blank Essential Quantum Mechanics GARY E. BOWMAN Department of Physics and Astronomy Northern Arizona University 1 Great Clarendon Street‚ Oxford OX2 6DP Oxford University Press is a department of the University of Oxford. It furthers the University’s objective of excellence in research‚ scholarship‚ and education by publishing worldwide in Oxford New York Auckland Cape Town Dar es Salaam Hong Kong Karachi Kuala Lumpur
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: School Name: KENDRIYA VIDYALAYA‚ BIBROD‚ RATLAM (M.P.) Λαβορατορψ Χερτιφιχατε This is to certify that_____________________________ has satisfactorily completed the course of chemistry investigatory project prescribed by CBSE under the AISSCE course in the year of 2010-11. . Date Signature of Teacher “χκνοωλεδγεμεντ I would like
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A student was assigned a certain task by his teacher in chemistry lab. During the experiment‚ student dropped the flask containing 250 ml‚ 3 molar NaOH solution. Due to this 50 ml of solution out of 250 ml‚ had fallen on the floor. Thinking that teacher may punish him for this mistake‚ he replenished the left over solution with 50 ml of water. The new molarity of NaOH solution will be. (A) 2M (B) 3M (C) 2.5 M (D) 2.4 M 2.* Which of the following molarity values of ions in a aqueous solution
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Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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Chapter 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. A) B) C) D) E) In quantum mechanics a node (nodal surface or plane) is: a place where Ψ is negative. a place where Ψ is positive. a place where Ψ = 0. a place where Ψ2 is large. a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals‚ Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule‚ how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans:
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Google‚ May 8‚ 2011‚ http://www.freeinfosociety.com/article.php?id=95 Nobelprize.org‚ “Niels Bohr – Biography”‚ Biography‚ May 8‚ 2011‚ http://nobelprize.org/nobel_prizes/physics/laureates/1922/bohr-bio.html Wikipedia‚ “Contributions to Physics and Chemistry”‚ Niels Bohr‚ May 8‚ 2011‚ http://en.wikipedia.org/wiki/Neils_Bohr Wikipedia‚ “Bohr model”‚ Bohr model‚ May 8‚ 2011‚ http://en.wikipedia.org/wiki/Bohr_model
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pH In chemistry‚ pH is a measure of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Pure water has a pH very close to 7. pH is defined as the decimal logarithm of the reciprocal of the hydrogen ion activity‚ aH+‚ in a solution. Universal indicator consists of a mixture of indicators such that there is a continuous color change from about pH 2 to pH 10. Universal indicator paper
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CHEMISTRY Safety‚ Matter‚ and Measurement Lab Safety Dress appropriately Follow directions and act appropriately Know where emergency equipment is MSDS Material Safety Data Sheets- contain safety information about chemicals Converting metric units Kilo Hecto Deca Base Deci Centi Milli 1000 100 10 1 1/10 1/100 1/1000 Significant Figures NOT Significant Digits “Placeholders”- Zeros before the decimal point and after the number
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ECOFRIENDLY WASTE PLASTICS UTILIZATION HI- TECH PLANT INTRODUCTION:- In the present age‚ there is a great treat of soil as wells air pollution caused by polythene. The disposal of plastic is a great treat for mankind .it has affected living as well as non-leaving things. To solve this problem and to save our environment from various harmful effects of polythene‚ this exhibit has been prepared. SCIENTIFIC PRINCIPALS:- This is based on the following principals:-
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Abstract The separation of a Fe3+ and Ni2+ mixture was firstly investigated; followed by the determination of the Fe3+ and Ni2+ content (concentration) in the original mixture. It was found that iron was a yellow solution and nickel respectively had a greenish colour. Their original concentrations respectively were 0.03669 M for iron and 0.03159 M for nickel. Introduction Ion exchange materials are insoluble substances containing loosely held ions which are to be exchanged with other ions in
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