A tank contains 0.450 kg of oxygen(O2) compressed into a volume of 2.32 L. Estimate the gas pressure (in atm) inside the tank at 5 degrees celsius.

Question

Do I convert 0.450 kg from grams to moles, and if I do, do I use the molar mass of oxygen?

Answer 1

Yes, and use the molar mass for O₂

Then use PV=nRT