Question

How many Liters of water vapor could be made from 5 Liters of Methane gas?

Answer 1

The balanced equation is below:

CH₄ + 2O₂ --> CO₂ + 2H₂O

According to Avogadro's law, moles and volume of gases are directly proportional under same conditions. Therefore, if according to the equation 1 mole of methane produces 2 moles of water,

5 L of methane will produce $5\times2=10\ L$ of water vapor.

Answer: 10 L