At 2600 K, ΔG° = 775 kJ for the vaporization of boron carbid…

At 2600 K, ΔG° = 775 kJ for the vaporization of boron carbide:                                                        B4C(s) ⇌ 4 B(g) + C(s)  Find ΔG and determine if the process is spontaneous if the reaction vessel contains 4.00 mol B4C(s), 0.400 mol of C(s), and B(g) at a partial pressure of 1.0 × 10-5 atm. 

Considering the reaction: N2O4 (g) → 2 NO2 (g) Which stateme…

Considering the reaction: N2O4 (g) → 2 NO2 (g) Which statement(s) is/are correct? I. ΔSsys > 0 II.  ΔSsys < 0                                 III.  ΔSsys = 0 IV. The number of possible microstates is greater for the reactant side than for the product side. V. The number of possible microstates is fewer for the reactant side than for the product side.