The following are (contrived) data for a chemical reaction of one substances.

Time (min)                Concentration (mol l⁻¹)
0..................................................................0.500
2..................................................................0.349
4..................................................................0.267
6..................................................................0.217
8..................................................................0.182
10................................................................0.157
12................................................................0.139
14................................................................0.124
16................................................................0.112
18................................................................0.102
20................................................................0.093

(a) Assume that there is no appreciable back reaction and determine the order of the reaction and the value of the rate constant.
(b) Find the expected error in the rate constant at the 95% confidence level.

(c) Fit the raw data to a third-degree polynomial and determine the value of the rate constant from the slope at t = 10.00 min.