What's the equation for the formation of NO2(g) from its elements in its standard states?
What's the equation for the formation of BF3(g) from its elements in its standard states?
What's the equation for the formation of C2H5OH(l) from its elements in its standard states?
What's the equation for the formation of CH3OH(l) from its elements in its standard states?
1 answer

It appears you are posting part of a problem from a delta H calculation or something similar. Sometimes it is best to post the entire problem.
All of these equations are done the same way. From the elements, the first two are
N2(g) + 1/2O2(g) ==> NO2(g)
B(s) + 3/2F2(g) ==> BF3(g)
If you're going somewhere else with this question, fractions won't do for the balanced equation.