2C(s) + 2H2(g) <--> C2H4(g); AH° = 52.5 kJ; AS° = -53.5 J/K at 298 K What is the equilibrium constant at 400.0 K for this reaction?

Please help answer both.

Calculate the heat of reaction for:    2 C  + 4 H2  +  O2  ---->  2 CH3OH  given:    C  + O2  ---->  CO2                                         ΔH = -393.5 kJ                2 H2 + O2  ---->  2 H2O                                   ΔH = -571.6 kJ             2 CH3OH  + 3 O2  ----> 2 CO2  + 4 H2O          ΔH = -1452.8 kJ            a) -3383 kJ        b) -477.4 kJ       c) 3383 kJ         d) 94.2 kJ          e) -94.2 kJ

Draw an endothermic reaction with a large EA, and a small change in H. Add the same reaction the presence of a catalyst on the same graph

(76) What is the major THERMODYNAMIC product for the following reaction?