A sample containing 4.8 g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant.

What is the volume after 4.00g of He is added to the 4.8g of O2 gas in the container

1 answer

Why can't you do this the same way you did the "0.5 mol gas added to 4.8 g O2 gas"?