This is the most difficult exercise in the digital primer. You must balance an equation, convert to moles, and make a stoichiometric calculation. Balance the following chemical equation, then answer the following question. C_8H_18(g) + O_2(g) rightarrow CO_2(g) + H_2O(g) How many grams of oxygen are required to react with 10.0 grams of octane (C_8H_18) in the combustion of octane in gasoline? Express the mass in grams to one decimal place.