Question

2) The hypothetical reaction 4 AX3(g) → Ag (g) + 6X2 (g) . has a rate constant value of 1.73 x 10-2 MTl sec-1 at 650.0°C for the loss of AX3. a) How long will it take for the concentration of AX3 to drop from 0.100 M to 0.067 M? b) Starting with an initial concentration of AX3 0.100 M, what will be the concentration of A4 and X2 when [AX3] 0.067 M?

Clear steps please.
Answers: a) 285 sec
b) [A4] = 0.00825 M; [X2] = 0.0495 M