A balloon has a volume of 2.50 L indoors at 22 degree C. If the balloon is taken outdoors on a cold day when the air temperature is -15 degree C (5 degree F), what will its volume be in liters? Assume constant air pressure within the balloon.

1 Answer
Meave60
Mar 23, 2015

The new volume will be 2.17 L.

You will need to use Charles' law to solve this problem. The equation is #(V_1)/(T_1) = (V_2)/(T_2)#

#V_1 = 2.50L#
#T_1 = 22"^(o)C + 273 = 295 K# (temp must be in Kelvins)
#T_2 = -15"^(o)C + 273 = 258 K#
#V_2 = ?#

#V_2 = (V_1T_2)/(T_1) = (2.50 L · 258 K)/(295 K) = 2.17 L#

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