1. The problem statement, all variables and given/known data What volume of CH4 at 0°C and 1.00 atm contains the same number of molecules as 0.58 L of N2 measured at 35.0 °C and 1.50 atm? 2. Relevant equations I think you just need to use Avogadro's Number and multiply by the molar mass? I guess my question is what equation would you use? 3. The attempt at a solution I haven't attempted the question due to lack of an equation.