gracieloll gracieloll Today at 9:25 PM Chemistry Answered 1. In the equation CH4 + 2O2 ---> CO2 + 2H20, what is the coefficient in 2H20? How is the coefficient used? 2. In the equation CH4 + 2O2 ---> CO2 + 2H20, how is the coefficient in 2O2 used? (Need answered Asap Please!! )