is the half life of the following reaction, given the following set of conditions (Hint: observe the units for the rate constant to determine the order of the reaction!):  2 HI (g) → H2 (g) + I2 (g)   Initial concentration of HI = 1.00 M k = 1.2 x 10-3 M-1 s-1   Select one: a. 420 s b. 240 s c. 580 s d. 830 s

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