A mickey mouse balloon has a maximum volume of 10.0 liters. A little boy purchased a MM balloon at Disneyland. It has a pressure of 1.25 atm and a volume of 9.00 liters. If the balloon rose to an elevation of 2,000 feet, the pressure inside the balloon dropped to 836 mm Hg. Did the balloon pop?

See your previous post. It's (P1V1/T1) = (P2V2/T2)

Substitute and see the value of V2 and if that exceeds the maximum volume of 10.0 L.