Calculate the product concentrations versus time for a pseudo-first-order reaction with k9 5 0.015 s21 and 3A40 5 0.005 M. Use times of 0.000 s, 0.001 s, 0.01 s, 0.1 s, 0.2 s 0.5 s, 1.0 s, 2.0 s, 5.0 s, 10.0 s, 20.0 s, 50.0 s, 100.0 s, 200.0 s, 500.0 s, and 1000.0 s. From the two earliest time values, find the “true” initial rate of the reaction. Determine approximately what percentage completion of the reaction occurs before the initial rate drops to

(a) 99% 

(b) 95% of the true value.