For the reaction:?

Question

CH4 + O2 → CO2 + H2O


how many moles of CO2 are produced from the complete reaction of 4.58 moles of O2 ?

Answer 1

you need to balance the equation first to find your mole ratio
CH4 + 2O2 ==> CO2 + 2H2O
so now you can see that for every 2 moles of O2 1 mole of CO2 is produced hence 4.58 divided by 2 gives you the answer.
4.58/2=2.29
Therefore 2.29 moles of CO2 are produced for every 4.58 moles of O2

Answer 2

4.58 divided into 2. Balance the equation and you will see that 1 mol of CO2 is produced from 2 mol of O2