Consider the decomposition of molecule X, which occurs by this first order reaction:   X  =>  Y + Z               (1)   In a reaction vessel, the concentration of X was monitored by light absorption as a function of time, and the following absorbance data were obtained:   Time (seconds)        Absorbance             0                      .600             34                    .300   What is the rate constant for reaction 1 above (include units

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