chemistry

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

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

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