題組內容

6. Methane (CH4) is an important greenhouse gas in the atmosphere. Currently, the average concentration of CH, in the atmosphere is 1.75 ppmv, and it will react with the hydroxyI radicals (ㆍOH). The reaction formula is615bb2fe06b79.jpg and the reaction rate R = k[CH4] [ ㆍOH]. Where the reaction rate constant k= 615bb337efee2.jpg. Assuming that the concentration of hydroxyl radicals (ㆍOH) in the atmosphere is 8.5 x 105 molecules615bb3644967c.jpg, and 1.0 ppm CH4 = 1.0 mole CH4/106 mole air.

(b) Assuming that the total mass concentration of the atmosphere is 615bb3babab83.jpg g. and the average molecular mass of the atmosphere is 29 g/mole. How many grams of CH4 is reacted in the atmosphere in one year? (5 pts)