can you please help me with these two problems and explain them? thank you!

The minerals hematite (Fe2O3) and magnetite (Fe3O4) exist in equilibrium with atmospheric oxygen: 4Fe3O4(s)+O2(g)6Fe2O3(s)Kp=2.51087at298K a) Determine PO2 at equilibrium. 10 (b) Given that PO2 in air is 0.21atm, in which direction will the reaction proceed to reach equilibrium? no change toward products toward reactants Enter your answer in the provided box. Hydrogen sulfide decomposes according to the following reaction, for which Kc=9.30108at700C: 2H2S(g)2H2(g)+S2(g) If 0.37mol of H2S is placed in a 3.0L container, what is the equilibrium concentration of H2(g) at 700 C? M