CHEMISTRY HELP ASAP KINETICS?

Assume that the following reaction:

2 FClO2 → 2 FClO + O2

is first order, with a rate constant of k = 0.0114 / s . Given an initial concentration of FClO2 of 0.772 M, what will the FClO2 concentration be after 45 seconds? (Hint: ln(A/Ao) = -kt )
Update: Answer options:
0.386 M
0.462 M
0.0114 M
- 0.252 M
0.513 M
1 answer 1