# chemistry

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.

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1. Use the ideal gas law: PV=nRT

from the mass, you can get the number of moles of oxygen gas. Remember temps are in kelvins.

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2. I got stuck on the grams part. How do I convert grams to moles? Do I use the molar mass of oxygen?

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