A weather balloon is filled with helium that occupies a volume of 5.00 x 104L At 0.995 atm and 32.0℃. After it is released, it rises to a location where the pressure is 0.720 atm and the temperature is -12.0℃. What is the volume of the balloon at the new location?

Answer 1

since PV/T is constant, you want V such that
0.720V/(-12.0+273.15) = 0.995*5.00*10^4/(32.0+273.15)
V = 59134 L