In a first-order reaction, what is the rate constant if the rate is 0.050 moles/l-sec and the reactant concentration is 0.030 moles/l

The half-life () is a timescale on which the initial population is decreased by half of its original value, represented by the following equation. This indicates that the half-life of a first-order reaction is a constant. Figure 2: Half lives graphically demonstrated for first-order reaction.

Explanation:

it is stable as it is in group 0 which have full outer shells of electrons