In the analysis of the kinetics of the reaction A + B products, which follows the reaction rate law v=k[A]^a[B]^b , the following results were obtained.

[A] (M)	[B] (M)	vo (M s-1)
0.450	0.450	1.9710-5
0.900	0.450	5.54x10-5
0.450	0.900	2.78x10-5

Determine the rate constant (kM^-1s^-1).