Solution: In a study of the decomposition of nitrosyl bromide at 10°C.NOBr → NO + 1/2 Br2 the following data were obtained: (1) The observed half life for this reaction when the starting concentration is 0.311

In a study of the decomposition of nitrosyl bromide at 10°C.

NOBr → NO + 1/2 Br₂ 

the following data were obtained: 

(1) The observed half life for this reaction when the starting concentration is 0.311 M is _________ s and when the starting concentration is 0.156 M is ________s. 

(2) The average Δ(1/[NOBr])/Δt from t = 0 s to t = 5.00 s is __________ M^-1 s^-1. 

The average Δ(1/[NOBr])/Δt from t = 5.00 s to t = 15.0 s is ___________M^-1 s^-1.