(A) Lil Time Rate (A)→ What reaction order is this? Based on your assessment, if the initial concentration of nitrate in the environment is 1.8 mol/L NO3, what will the concentration

be after 21 days if the rate constant of the reaction is k = 0.5? Select the appropriate units for k based on what reaction order you believe this is: Zero (M/hr), First (1/hr) or Second (1/M.hr). Assume that there are no other inputs or outputs. (3 marks) c) How many MORE days will it take to reach a concentration that is below the Canadian drinking water guidelines of 10 mg/L of NO3-N? (2 marks) **Molar mass N (14.0067 g/mol) and O (15.999 g/mol).