posted by Boo Boo .
A sample containing 4.8g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant.
What is the new volume if 0.500 mole of O2 gas is added?
Convert 4.8 g O2 to mols, add 0.5 mol to that and use (n1/V1) = (n2/V2)