Consider the following reaction: N 2 (g) + 3H 2 (g) 2NH 3 (g) In a given experiment, 1.84 moles of N 2 (g) and 3.50 moles of H 2 (g) were placed in a...

Consider the following reaction:

N2(g) + 3H2(g) ⇌ 2NH3(g)

22InitialChangeEquilibrium2Change

 [N2] (M)[H2] (M)[NH3] (M)

Initial 0.510, 0.970, 0

Change-x, -3x, +2x

Equilibrium0.510-x, 0.970-3x, 2x

At a particular temperature, the equilibrium concentration of NH3 is found to be 0.544 M. 

Given this information, determine the numerical value of K for this reaction, at this temperature.

(If you want to enter your answer in scientific notation, use the format as shown below:

2.5 x 10-3 = 2.5E-3)

K = ???

I GOT HALFWAY THROUGH THE PROBLEM BUT CANNOT FIGURE OUT THE REST OF IT PLEASE HELP