What is one peice of evidence on continental drift?
a) the type of rocks and fossils on the coasts of different continents match
b) the fact that some continents look like puzzle pieces that can fit together
c) these are both pieces of evidence for continental drift

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 .