Dinitrogen Tetroxide Partially Decomposes According to the Following Equilibrium: N₂O₄(g)→

Dinitrogen tetroxide partially decomposes according to the following equilibrium: N₂O₄(g) → 2NO₂(g)
A 1) 000-L flask is charged with 8.00 × 10^-3 mol of N₂O₄.At equilibrium,5.04 × 10^-3 mol of N₂O₄ remains.K_eq for this reaction is

A) 0.154
B) 0.181
C) 0.212
D) 6.94 × 10^-3
E) 2.37 × 10^-5