Nitrogen Pentoxide Decomposes by a First-Order Process Yielding N₂O₄ and Oxygen.2N₂O₅

Nitrogen pentoxide decomposes by a first-order process yielding N₂O₄ and oxygen.2N₂O₅ $\rarr$ 2N₂O₄ + O₂ At a given temperature, the half-life of N₂O₅ is 0.90 hr. What is the first-order rate constant for N₂O₅ decomposition

A) 0.17 hr^-1
B) 0.37 hr^-1
C) 0.57 hr^-1
D) 0.77 hr^-1
E) None of the above