A 13.0 L helium tank is pressurized to 28.0 atm. When connected to this tank, a balloon will inflate because the pressure inside the tank is greater than the atmospheric pressure pushing on the outside of the balloon. Assuming the balloon could expand indefinitely and never burst, the pressure would eventually equalize causing the balloon to stop inflating. What would the volume of the balloon be when this happens? Assume atmospheric pressure is 1.00 atm. Also assume ideal behavior and constant temperature.

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Answer:

The volume would be 364 L

Explanation:

This is an ideal gases problem and the specific situation is expansion. To find the final volume, we must study two states:

Initial

[tex]V_{1} =13.0\\P _{1}=28.0 atm\\[/tex]

Final

[tex]V_{2} =?\\P _{2}=1.00 atm\\[/tex]

Then, we use the equation of ideal gases and as temperature is constant, we can solve it as follows:

[tex]P_{1} V_{1}=nRT\\P_{2} V_{2}=nRT\\nRT=nRT \\ P_ {1} V_{1}=P_{2} V_{2}\\V_{2}=\frac{P_ {1} V_{1}}{P_{2} } \\V_{2}=\frac{28.0atm*13.0L}{1.00 atm} \\V_{2}=364L[/tex]

As you see, the final volume is greater than the initial, because the pressure drops and pressure and volume are inversely proportional.