How do I solve this AP Chemistry problem?

Question

At a given temperature, K=1.3×10^-2 for the reaction calculate values of K for the following reactions at this temperature

 

At a given temperature K=1.3×10^-2 for the reaction N2 (g)+3H2 (g)==>2NH3 (g) 

Calculate  the values of K for the following reactions at this temperature.

 

A. 1/2N2 (g)+ 3/2H2(g)==>NH3(g)

B. 2NH3 (g)==>N2 (g)+3H2(g)

C.NH3 (g)==>1/2N2(g)+3/2H2 (g)

D. 2N2 (g)+6H2 (g)==>4NH3

Answer 1

The value of K is already given, so there is no need to calculate it.  Did you mean to ask to write the equilibrium expression?  That has been answered in 2 previous questions.