A gas bottle contains 0.650 mol of gas at 730. mmHg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle

There are 0.779 moles of gas were added to the bottle.

Explanation:

Given: = 0.650 mol,     = 730 mm Hg (1 mm Hg = 0.00131579 atm) = 0.96 atm

= ?,           = 1.15 atm

Formula used is as follows.

Substitute the values into above formula as follows.

Thus, we can conclude that there are 0.779 moles of gas were added to the bottle.