1. The problem statement, all variables and given/known data Based on your understanding of Avogadro's law. 1000 L steel storage tank contains 88.5 kg of methane gas, CH4. Calculate no. of moles. 3. The attempt at a solution one method= no. of moles=mass/molar mass. no. of moles= 88500/16.04= 5517.4 moles. other method= 1 mol= 22.4 liter. no of moles= 1000 L/22.4L= 44.6 moles. Please inform me of the correct method, thanks!