How do I do these questions?

Question

1. For the reaction N2(g) + 3H2(g) = 2NH3(g)

Kp = 5.60×10−3 at 258 degrees C. What is the K for the reaction at this temperature?


2.
For the reaction 2CH4(g) = C2H2(g) + 3H2(g)

K = 0.150 at 1638 degrees C. What is the Kp for the reaction at this temperature?

Answer 1

Kp = K* RT ^ (del n)

1. del n = 2-(1+3)

2. del n = (1+3) - 2