A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (abo

A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final volume of the balloon.

671 is not the answer..

Use the combined gas law.

P1V1 / T1 = P2V2 / T2

V2 = P1V1T2 / T1P2 = (1.2 atm)(2.00 L)(250 K) / (298K)(0.00300 atm) = 670 L (to 2 sig figs)