X(g) + 2 Q(g) ⇌ R(g) + Z(g) K_c = 1.3 × 10^5 at 50°C A 1.0 mol sample of X(g) and a 1.0 mol sample o — Equilibrium Chemistry Question

X(g) + 2 Q(g) ⇌ R(g) + Z(g) K_c = 1.3 × 10^5 at 50°C

A 1.0 mol sample of X(g) and a 1.0 mol sample of Q(g) are introduced into an evacuated, rigid 10.0 L container and allowed to reach equilibrium at 50°C according to the equation above. At equilibrium, which of the following is true about the concentrations of the gases?