1. The problem statement, all variables and given/known data Find the rms speed for an argon atom if 9.0 mol of the gas is confined to a 8.2 liter container at a pressure of 5.4 atm. *I know how to solve the problem, but I forget how to convert 9.0 moles of Argon into moles/kg..how do you do that?? 2. Relevant equations mass# of Ar= 39.9 Av. constant 6.02x10^23 1000g=1 kg 3. The attempt at a solution I think I need to divde 39.9 grams of argon by 1000 to convert it to kg and then do I divde by 9 moles?