Experimental data are listed here for the reaction A → 2 B.

(a) Prepare a graph from these data; connect the points with a smooth line; and calculate the rate of change of [B] for each 10-second interval from 0.0 to 40.0 seconds. Does the rate of change decrease from one time interval to the next? Suggest a reason for this result.
(b) How is the rate of change of [A] related to the rate of change of [B] in each time interval? Calculate the rate of change of [A] for the time interval from 10.0 to 20.0 seconds.

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Time (s) [B] (mol/L) 0.00 0.000 0.326 0.572 0.750 0.890 10.0 20.0 30.0 40.0