For the combustion of methane, beginning with 3.15 mole of CH4 .
How many moles of CO2 are obtained when the CH4 is completly combusted?
The balanced chemical equation for the combustion of methane is:
CH4 + 2O2 → CO2 + 2H2O
This means that for every mole of methane (CH4) that is combusted, one mole of carbon dioxide (CO2) is produced.
Therefore, if we start with 3.15 moles of CH4 and combust it completely, we will obtain 3.15 moles of CO2.