In an experiment measuring the efficacy of bioremediation for a toxic organic pollutant, the following data was obtained. Use the data (below) to answer the following questions.

Time (days) Concentration (mg/L)
0 66.99
0.5 43.59
1 24.67
2 9.333
3 3.523
5 0.447
12 6.667 x 10^-4

What is reaction rate constant for the process?

a. 0.96 hr-1
b. 0.48 hr-1
c. 0.10 hr-1
d. 0.04 hr-1
e. 1 hr-1

Given the rate obtained in above question, how much time is required to achieve log 3 transformation (removal) of the organic pollutant?

a. 7.17 days
b. 0.768 days
c. 27.4 days
d. 172.2 days
e. 1.14 days