A products reaction according to A or 1. it is a degree. since 1.6 g of A is left to decay, there is 0.4 g of A left after 38 minutes, what is the half-life of the reaction and the value of the rate constant k?

A. t1/2= 9.5 min and k= 0.073 min-1

B. t1/2= 19 min and k= 0.036 min-1

C. t1/2= 1140 s and k=0.0012 s-1

D. t1/2= 570 s and k=0.0006 s-1