A meteorological balloon has a radius of 1.0 m when released at sea level at 20 ◦C
and expands to a radius of 3.0 m when it has risen to its maximum altitude, where the
temperature is -20 ◦C. What is the pressure inside the balloon at that altitude ?
At sea level:
P1 = 760 mm Hg
V1 =
T1 = 20 + 273 = 293 K
At high altitude:
P2 = ?
V2 = 27
T2 = -20 + 273 = 253 K
So, combined gas law:
P1 = 760 mm Hg
V1 =
T1 = 20 + 273 = 293 K
At high altitude:
P2 = ?
V2 = 27
T2 = -20 + 273 = 253 K
So, combined gas law: