What is the half-life (in seconds) of a zero-order reaction which has an initial reactant concentration of 0.854 m with a k value of 5.42 × 10–2 m/s?

What is the half-life (in seconds) of a zero-order reaction which has an initial reactant concentration of 0.854 m with a k value of 5.42 × 10–2 m/s?