The half-life of a first-order drug degradation reaction is 48hrs. Calculate the rate constant.

Thx!!!

The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k.

rate constant= .693/48