which converts nitrogen and hydrogen into ammonia

1) The Haber process which converts nitrogen and hydrogen into ammonia is one of the most important reactions in industrial chemistry. The reaction may be written asN2(g) 3 H2(g) ? 2 NH3(g)a) How is reaction related to the formation reaction for ammonia?b) Find ?Hºrxn for reaction at T = 25. ºC.c) Find ?Hºrxn for reaction at T = 450.ºC. Note that this is the temperature at which this reaction is typically carried out industrially. You may assume in your calculation that Cp m is independent of temperature for all reactants and products.