Asolution that contains a large amount of salt and a small amount of water is said to be a solution. a. dilute b. unsaturated c. diffused d. concentrated

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

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 .