What volume of water vapor measured at STP is produced by the combustion of 4.00 g of natural gas (CH4)? (you must write and balance the equation first)

The balanced equation shows you that a million mole of CH4 will produce 2 moles of H2O.

Explanation:

4 gm CH4 equals 4.0 / (sixteen.043) moles of CH4 or 0.249 moles