(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).