a 600 mL ballon is filled with helium at 700mm Hg barometric pressure. The balloon is released and climbs to?

Question

a 600mL balloon is filled with helium at 700mm Hg barometric pressure. The balloon is released and climbs to an altitude where the barometric pressure is 400 mmHg what will the volume of the balloon be if during the ascent the temperature drops from 24 degree celcius to 5 degree celcius?

Dr.A · Accepted Answer

V1 = 0.600 L
p1 = 700/760=0.921 atm
T1 = 24 + 273 =297 K
V2 = ?
p2 = 400/760=0.526 atm
T 2 = 5 x 273 = 278 K

use the combined gas law

p1V1/T1 = p2V2/T2

0.921 x 0.600 / 297 = 0.526 V2 / 278

V2 = 0.983 L => 983 mL

a 600 mL ballon is filled with helium at 700mm Hg barometric pressure. The balloon is released and climbs to?

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