Problem 1 (40/100): Calcium bicarbonate can decompose at sufficiently high temperature according to the following equation: Ca(HCO3)2(s) CaCO3(s) + H2O(g) + CO2(g) If pure calcium bicarbonate is placed into a sealed vial at vacuum and the vial is subsequently heated to a specific temperature, the total pressure in it becomes 0.15 bar at equilibrium. Calculate the equilibrium constant (K) under these conditions (0.15 bar total pressure at equilibrium). If the vial initially contained 0.25 bar of H2O(g), determine the partial pressure of CO2(g) at equilibrium.