Question 2. Use the integrated rate laws to answer the following questions. (5 points each) A). You study a decomposition reaction and determine that it is first order with respect to reactant A and it has a rate constant of 0.0455 day. If you start with an initial concentration of A of 0.350 M, how long will it take for the concentration of A to drop to 0.100 M? B) A certain drug has been prepared to a concentration of 0.0350 M and decays with a rate constant of 0.324 M'day. The drug is known to lose its effectiveness below a concentration of 0.00325 M. What is the shelf life of this drug? C) A radioactive substance has a half life of 245 years. If you start with a 455 g sample of the substance, how much will remain radioactive after 622 years?

Question 2. Use the integrated rate laws to answer the following questions. (5 points each) A). You study a decomposition reaction and determine that it is first order with respect to reactant A and it has a rate constant of 0.0455 day. If you start with an initial concentration of A of 0.350 M, how long will it take for the concentration of A to drop to 0.100 M? B) A certain drug has been prepared to a concentration of 0.0350 M and decays with a rate constant of 0.324 M'day. The drug is known to lose its effectiveness below a concentration of 0.00325 M. What is the shelf life of this drug? C) A radioactive substance has a half life of 245 years. If you start with a 455 g sample of the substance, how much will remain radioactive after 622 years?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section: Chapter Questions

Problem 41QRT

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