This mechanism shows the conversion of ozone to oxygen in the upper atmosphere. what is the overall reaction from the mechanism? step 1: cl + o3 → clo + o2 step 2: o + clo → cl + o2 a. o3 + cl → o2 + clo b. o3 + clo → 2o2 + cl c. 2o3 → 3o2 d. 3o2 → 2o2

Select the correct value for the indicated bond angle in each of the compounds. o−o−oo−o−o angle of o3 90° 109.5° < 109.5° 120° < 120° 180° f−b−ff−b−f angle of bf3 180° < 109.5° < 120° 120° 109.5° 90° f−o−ff−o−f angle of of2 < 120° 120° 90° 109.5° 180° < 109.5° cl−be−clcl−be−cl angle of becl2 90° 109.5° 180° 120° < 109.5° < 120° f−p−ff−p−f angle of pf3 90° 109.5° < 109.5° 180° 120° < 120° h−c−hh−c−h angle of ch4 90° < 109.5° 180° 120° < 120° 109.5°