An inflated balloon occupies a volume of 2.0 L the balloon is tied with a string and weighted with a heavy stone. What is its volume when it reaches the bottom of a pond 20.8 m deep? Note: One atmosphere of pressure supports a column of water 10.4 m high. Assume the pressure acting on the balloon before it submerges is 1.0 atm.

P1V1 = P2V2