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

Chemistry 
bobpursley
Yes, and use the molar mass for O_{2}
Then use PV=nRT
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