1 UNIT 9 CHEMICAL KINETICS 1. (c) mole 1–1 sec–1 The rate law for a reaction A + B →products‚ is rate = k [A]1[B]2. 7. Then‚ which one of the following statements is false ? (a) If [B] is held constant while [A] is doubled‚ the reaction will proceed twice as fast. (b) If [A] is held constant while [B] is reduced to one quarter‚ the rate will be halved (c) If [A] and [B] are both doubled‚ the reaction will proceed 8 times as fast. 2. Fro a first order reaction‚ a straight
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uniform disk of radius R = 0.25 m has a string wrapped around it‚ and a m = 3 kg weight is hanging on the string. The system of the weight and disk is released from rest. a) When the 3 kg weight is moving with a speed of 2.2 m/s‚ what is the kinetic energy of the entire system? KETOT = KEwheel+KEweight = (1/2)(I)(w2)+(1/2)(m*v2) =(0.5* v2)(m+1/2M) =0.5*(2.2^2)*(3+(.5*15)) J b) If the system started from rest‚ how far has the weight fallen?
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puck of mass m initially at speed u collides head-on (without rotation) with a stationary puck of mass M. Find the velocities of both puck after the collision if: i) the collision is fully elastic ii) the collision if fully inelastic. i) momentum: kinetic energy: mu = mv+MV (+ve in direction of initial u) 1 /2 m u2 = 1/2 m v2 + 1/2 M V2 2 eqns in 2 unknowns: V = (u - v) m/M substitute in K eqn: u2 = v2 + (M/m) V2 = v2 + (M/m) (u - v)2 (m/M)2 = v2 + (u - v)2 (m/M) let ρ = (m/M) ⇒ v2 (1 + ρ) - 2ρ
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Isokinetic dynamometry testing on male university sport and exercise science students looking at Hamstring/Quadriceps ratio‚ peak torque‚ peak torque to body mass ratio and power. Abstract Isokinteic dynamometry testing is important in monitoring injury and performance. There are few studies that have looked at male university sport and exercise science students bilateral difference of the hamstrings and quadriceps at 60˚s and 180˚s.The purpose of the study was to look at injury and performance
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*CHEMICAL KINETICS Collision theory and rates of reaction *One of the main considerations when examining chemical reaction is whether it will take place fast enough for it to be useful. *In other words‚ there’s no point carrying out a reaction if it takes 150 years to form the product! *Many chemical reactions occur very quickly. *Studying Reaction Rates *Defined as the change in concentration of reactants of products per unit time. *Units: mol dm¯³ s¯¹ *Rate of Reaction * ‚ the
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INTRODUCTION John Calvin Maxwell is an American‚ Leadership Consultant‚ Speaker‚ and Pastor who has written more than 60 books. Titles include the 21 Irrefutable Laws of Leadership that indeed delivers a powerful‚ definitive statement of the foundational laws that shape leadership. Each principle has stood the test of time‚ holding true from generation to generation. Maxwell cite some real-world examples to easily grasp where your leadership’s strengths and weaknesses takes place. The reader might
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Maxima & Minima Problems‚ Derivatives of Trigo Function‚ Exponential & Log Functions‚ Integration‚ Area Of a region‚ Kinematics‚ Curves & Circles‚ Plane Geometry. 3. Ten Years Series‚ Redspot Book Chemistry 1. Secondary Three Topics- Kinetic Particle Theory‚ Measurement & Experimental Techniques‚ Purification & Separation‚ Elements Compounds & Mixtures‚ Atomic Structure‚ Ionic Bonding‚ Covalent & Metallic Bonding‚ Writing Eqn‚ The Mole‚ Chemical Calculations‚ Acid & Bases 2. Secondary Four
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“The Five Levels of Leadership‚ Proven Steps to Maximize Your Potential by John Maxwell” A Book Review/Critique Presented to: Attorney Araceli Linatoc In partial fulfillment of the requirements in MPA 627 Leadership and Organizational Change By: Lawrence Lerias MPA Student October 2013 CONTENTS : About the Author‚ John Maxwell Level 1: Position Level 2: Permission Level 3: Production Level 4: People Development Level 5: The Pinnacle/Personhood
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this presentation is to discuss the theory of distribution strategy with the underlying real life examples of McDonald ’s fast-food restaurants in Australia. In other words‚ the aim is to discuss McDonald ’s distribution channel‚ the way this fast-food restaurant gets its products to the market. Nonetheless‚ this presentation will demonstrate that McDonald ’s distribution strategy is effective in many cultures. In the theory of marketing mix‚ place (distribution) determines where the product will
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FACTORS INFLUENCING CHOICE OF DISTRIBUTION CHANNEL IN THE TOURISM INDUSTRY IN KENYA. A SURVEY OF TOUR AND TRAVEL COMPANIES IN NAIROBI BY DECLARATION I declare that this is my original work and has not been submitted at any academic institution for examination purposes. Signed…………………………………………..Date……………………………………….. ROSE This Research Proposal has been submitted with my approval as the University Supervisor. Name…………………………………….. Designation………………………………………
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