# A sample containing 4.80 g of #O_2# gas has a volume of 15.0 L at constant pressure and temperature. What is the new volume, in liters, after 0.500 mole of #O_2# gas is added to the initial sample of 4.80 g of #O_2#?

##### 1 Answer

Feb 16, 2017

The new volume is 65.0 L.

#### Explanation:

Initially, you have

Thus, you have

If you now add 0.500 mol of

Since volume is directly proportional to the number of moles, the new volume is