Gas filled weather balloon has volume of 56.0L at ground level,where pressure is 769mmHg and temp. is 23.9°C.After released,balloon rises to altitude where temp. is

-8.06°C and pressure is 0.0846atm.What is weather balloon volume at higher altitude?

We use P1 *V1/T1 = P2 *V2/T2

Note 0.0846atm = 0.0846 x 760 = 64.296mmHg

temperature must be in degrees Kelvin 23.9°C= 23.9 + 273.15= 297.05 °K

and -8.06°C = -8.06+ 273.15= 265.09 °K

Hence 769 x 56/297.05 = 64.296 x V/265.09

144.9722 x 265.09/ 64.296 =V

V=597.715 liters

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