During heavy exercise, what happens to the bicarbonate ion concentration in the blood? It decreases because it neutralizes the weak base formed during exercise.
It decreases because it reacts with hydronium ions that form during exercise.
It increases because more carbonic acid dissociates.
It increases because of increased water intake.

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .