Calculate Eº and create Nernst equation .... URGENT!!!! Please!!!?

Question

Here is the equation:

2NO3− (aq) + 3H2(g) > 2NO(g) + 2OH−(aq) + 2H2O (l)

Answer 1

At first u must have the concentrations of each element then use the following formula >><<

If  the equation is/

aA+bB>cC+dD , then

Q=([C]^c)aq([D]^d)/([A]^a)([B]^b)aq

In case of aq. soln=Molarity

In case of gases+Partial P=1atm

In case of solid or pure liquid=1

Where capital letters is the elements and small letters is the ionic numbers