The Henry’s Law constant for nitrous oxide in water is 2.4 x 10-2 molal/bar. Determine the mass of N2O that will dissolve in 250 mL of water, under an N2O pressure of 3.3 bar. The density of water at 25 ºC is 1.0 g/ml.

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 .