> A gas at 25°C exactly fills a container previously determined to have a volume of 1.05 x 108 cm. The container plus gas are weighed and found to have a mass of
837.6 9. The container, when emptied of all gas, has a mass of 836.29. What is the density of the gas at 25°C?
Express your answer using two significant figures.

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 .