Burning 32 g of CH4 in excess oxygen will produce how much CO2 according to the equation
CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)
it's actually 2.0 mol
Here is a worked example of a stoichiometry problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html