At a certain temperature the rate of this reaction is first order in CICH₂CH₂Cl with a rate constant of 0.00307: CICH₂CH₂Cl (g) → CH₂CHCI (g) + HC1 (g) Suppose a vessel contains CICH₂CH₂Cl at a concentration of 0.260M. Calculate the concentration of CICH₂CH₂Cl in the vessel 750. seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. M

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