74. Solving a chemistry problem

15. Substance A with a mass of g kg is placed in a closed vessel with a capacity of V m3. At a temperature T, K, part of the water of crystallization was released into the gas phase and pressure P, Pa was established in the vessel: 1) determine the mass of water associated with substance A; 2) calculate the absolute amount of the solid phase in the equilibrium state of the system 3) calculate Kp, KS, ΔF0 and ΔG0 of the reaction at temperature T, K.
option g, kg A V, m3 T, K P, Pa
15 0.856 MgCl2*6H2O 10 343 1999.5