Molecular iodine, I2(g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1. (a) What is the half-life for this reaction?  _______ s (b) If you start with 0.047 M I2 at this temperature, how much will remain after 5.18 s assuming that the iodine atoms do not recombine to form I2?  _______ M

Chemistry: Principles and Reactions
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Chapter11: Rate Of Reaction
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Problem 42QAP: The decomposition of sulfuryl chlorideSO2Cl2fur dioxide and chlorine gases is a first-order...
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Molecular iodine, I2(g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1.

(a) What is the half-life for this reaction?
 _______ s

(b) If you start with 0.047 M I2 at this temperature, how much will remain after 5.18 s assuming that the iodine atoms do not recombine to form I2?
 _______ M
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