Amixture of 10 cm3 of methane and 10 cm3 of ethane was sparked with an excess of oxygen. after cooling to room temperature, thr residual gas was passed through aqueous potassium hydroxide. what volume of gas was absorbed by the alkali? . (need the and with working quick)

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 .