Hydrogen iodide decomposes slowly to H2 and I2 at 600 K. The reaction is second order in HI, and the rate constant is 9.7×10−6M−1s−1. If the initial concentration of HI is 0.100 M. What is its molarity after a reaction time of 7.00 days? What is the time (in days) when the HI concentration reaches a value of 0.080 M?

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