Chemistry help I don't know what its asking for.

I was assigned questions to do at the end of the chapter and I answered just about all of them except # 16. The question is:

Interpret the following equation for the complete combustion of octane in terms of moles of reactants and products, their mole masses:

2 CH8H18 + 25 O2 ----> 16 CO2 + 18 H2O

I must have reread the chapter 4 times and I still didn't get how to answer this question PLEASE HELP thanks

Basically, just talk it out. :) 2 moles of octane and 25 moles of oxygen gas react in a combustion reaction to form 16 moles of carbon dioxide and 18 moles of water. :]

the amount of moles is the coefficient.
so 2 moles of octane reacts with 25 moles of oxygen gas to form 16 moles of carbon dioxide and 18 moles of water.