At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.130 s¯¹: 2HI (g) → H₂(g) + 1₂ (g) Suppose a vessel contains HI at a concentration of 0.350M. Calculate the concentration of HI in the vessel 9.40 seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. M x10 X

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