Nitrosyl Bromide Decomposes According to the Chemical Equation Below $\times$ 10^-3
B) 4

Nitrosyl bromide decomposes according to the chemical equation below.2 NOBr(g) 2 NO(g) + Br₂(g)
When 0.260 atm of NOBr is sealed in a flask and allowed to reach equilibrium,22% of the NOBr decomposes.What is the equilibrium constant,K_p,for the reaction?

A) 2.3 $\times$ 10^-3
B) 4.5 $\times$ 10^-3
C) 3.5 $\times$ 10^-2
D) 4.8 $\times$ 10^-2
E) 8.0 $\times$ 10^-2