Question: how many moles are represented by 16.0 g of ethanol c2h5oh?
Answer: C2H5OH + 3O2 → 2CO2 + 3H2O 6.25 grams of O2 6.25 / 32 moles = . 195 moles The equation requires 1 mole of C2H5OH for every 3 moles of O2.