knowledge of the mass of each individual atom‚ the percentage composition by mass can be determined The Mole (mol) o A counting unit‚ one mole refers to 6.02 x 1023 particles of any given substance o Known as Avogadro’s Constant and given the symbol NA Molar Mass o The molar mass of a substance is the mass of one mole of a particular substance Mass of one particle x 6.02 x 1023 o Coincidentally‚ the molar mass of a substance has the same numerical value as the atomic‚ molecular‚ or formula
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Summary of Rizal The film started with a scene showing Rizal writing a letter. The letter contains his thoughts that the Philippines has a serious illness and that it is plagued by the Spanish domination over our country. Crisostomo Ibarra was also introduced in the film‚ and it is Rizal’s alter ego. Ibarra had been forced to have two personalities because of the worsening problem in our country. Rizal had published books such as the Noli Me Tangere and El Filibusterismo‚ as his weapons against
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Question 5: In this technological age‚ the power of the engineers in shaping the society and environment in all pervading and can profoundly affect the lives of many members of the society. Enumerate‚ from your personal experience‚ how largely positive impacts have accrued from the contributions of engineers. Answer: Introduction In the eyes of public‚ an engineer is a professional man who is of sufficient training‚ expertise‚ and integrity as to be able to act with independence and impartiality
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Chem 170 Exam 2 Review Chapters 5‚ 11-13 Instructions: You are allowed to use a scientific calculator to perform mathematical operations. Please silence and put away all cell phones and pagers! Part I. This section is multiple-choice. Fill in the letter corresponding to the best answer on your Scantron form #882. 1. The __________ and __________ contribute most to the mass of an atom‚ while the _____________ determines the atom’s chemical behavior. A. B. C. D. E. proton‚ neutron‚ electron proton
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Cl2 2 AlCl3 ? How many neutrons are there in 131I? Which bond is the most polar? I-Cl I-Br I-S I-I Circle the molecules that are polar (have a dipole moment): CCl4 CH4 H2O NH3 HBr CHCl3 CCl2F2 How many unpaired electrons does the Si atom have? Write the correct Lewis structure for CS2. Write the formal charges on each atom in [F-S=F]2+ (lone pairs are not shown). How many ions are formed when Ca3(PO4)2 dissolves? How many protons‚ neutrons‚ and electrons are there in
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------------------------------------------------- 1.Top of Form Arrange the following elements in order of increasing electronegativity: germanium‚ bromine‚ selenium‚ arsenic Please answer this question according to the general rules you have learned regarding periodic trends. DO NOT base your answer on tabulated values since exceptions may occur. | germanium smallest arsenic selenium bromine largest Feedback: Electronegativity is the ability of an atom in a molecule to attract
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UNIVERSITI TEKNOLOGI P E T RO NA S @t C OU R S E DATE TIME . GA B 2O13 B2133BUSINESS / SM STATISTTCS / QUANTITATIVE METHOD 27 MAY2008(TUESDAY) 2 .3 0PM- 5.30PM ( 3 hour s) INSTRUCTIONS CANDIDATES TO 1. 2. 3. 4. 5. Answer FIVE(5)outof SIX(6)questions theQuestion from Booklet. BeginEACHanswer a newpagein theAnswer on Booklet. lndicate clearly answers arecancelled‚any. that if Whereapplicable‚ showclearly stepstakenin arriving the solutions at and indicate ALL assumptions. Do notopenthisQuestion
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• Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 8807-6501 21 pages © IBO 2007 –2– 1. Which of the following contains only fundamental SI units? A. B. C. D. ampere volt mole kilogram newton second ampere metre N07/4/PHYSI/HPM/ENG/TZ0/XX+ second kelvin kilogram tesla 2. The mass of a body is measured with an uncertainty of 2.0 % and its volume with an uncertainty of 10 %. What
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Stress analysis of tube & flat flange Note: Do not base your design decisions solely on the data presented in this report. Use this information in conjunction with experimental data and practical experience. Field testing is mandatory to validate your final design. Simulation helps you reduce your time-to-market by reducing but not eliminating field tests. Table of Contents Table of Contents 2 List of Figures 2 Description 3 Assumptions 3 Model Information 3 Study Properties 3 Units
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EGA108 / EG-279 ASSESSED SHEET 1 To be handed in via Blackboard by 5pm on Thurs Nov 8th. Show your workings in all cases – if you want to include hand-written workings‚ embed these as a scanned or photographed image. e = 1.6 x 10-19 C NA = 6.03 x 1023 me = 9.11 x 10-31 kg kB = 1.38 x 10-23 JK-1 By: darky- 712402 1 List two aspects of materials behaviour that the Drude model can explain. The Drude model can explain the Thermal Conductivity in metals and Electrical Conductivity of metals
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