What is the Equilibrium Concentration of NO in the Reaction N2 + O2 = 2NO?

[jlc287]

I am having trouble figuring out the equillibrium equation in ppm for the following reaction N2 + O2 = 2NO. With 10 moles of N2 and 1 mole of O2. I am having trouble figuring out how to start this problem. Can anyone give me a hint...it has been years since i tried this.

 

[physgirl]

Wait, so you want to find the expression for the equilibrium constant in terms of partial pressure?

 

[jlc287]

I'm sorry, I need to find the equlibrium concentration of NO.