any help with this equilibrium question please? first time revising this in a while

any help with part B would be great please - is anyone able to walk me through the method for this equilibrium answer please? thank you

Hello
You can calculate the reaction quotient(Q) at the given time and compare it with the equilibrium constant(Kc) to predict which direction the reaction will shift to reach equilibrium.
The expression for Q is the same as that of Kc but we can calculate Q even for an reversible reaction that is not in equilibrium
If Q > Kc : the equilibrium shifts to the left yielding more products until Q=Kc
If Q < Kc : the equilibrium shifts to the right yielding more products until Q=Kc
If Q=Kc : the reaction is in equilibrium

Hope this helps

and have a look

thank you that helps just to clarify - if Q > Kc, the equilibrium shifts to the left yielding more reactants until Q = Kc? I.e., it yields more of the stuff on the LHS?