# When 2.5 liters of oxygen gas reacts with excess methane how many liters of carbon dioxide is produced?

$\text{1.25 litres}$
$C {H}_{4} \left(g\right) + 2 {O}_{2} \left(g\right) \rightarrow C {O}_{2} \left(g\right) + 2 {H}_{2} O \left(l\right)$