Question

An arctic weather balloon is filled with 21.2 L of helium gas inside a prep shed. the temperature inside the shed is 5° C. The balloon is then taken outide, where the temperature is -20°C. calculate the new volume of the balloon.

O GASES Using Charles's Law an arctic weather balloon is filled with 21.2 L of helium gas inside a prep shed. The temperature inside the shed is 5. °C. The balloon is then taken outside, where the temperature is -20 °C. Calculate the new volume of the balloon You may assume the pressure on the balloon stays constant at exactly 1 atm. Round your answer to 3 significant digits. X ?

Answer 1

According to charles's law,

V1 / T1 = V2 / T2

V1 = initial volume = 21.2 L                                  V2 = final volume = ?

T1 = initial temperature = 5 ^oC = 273 + 5 = 278 K                     

T2 = final temperature = -20 ^oC = 273 - 20= 253K

The final volume, V2 = (V1 x T2) / (T1)

                                     = (21.2 * 253) / (278)

The final volume, V2 = 19.29 L

The new volume of the balloon is 19.3 L