In the selection about oxidation, vinegar was used as part of an experiment to change the appearance of copper. In this selection, you learned that oxygen, food molecules, and enzymes are all part of
respiration. Which of these three chemicals plays the same role in oxidation as vinegar did in the
experiment? Explain your answer in detail.

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 .