What mass of carbon dioxide is produced from the complete combustion of 7.30×10−3 g of methane?

We know that the reaction goes to completion, so all the methane will be reacted. To find the mass of carbon dioxide used, we can use the number of moles from the above equation, and the molecular weight of CO2 (= 44.009 g/mol). The mass of CO2 produced is 3.29*10^-3g.

Cause its being chemically applied?