Question

A balloon is filled with 10 L of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20L?

Answer 1

A balloon is filled with volume of air filled =10 L, Atmospheric pressure= P_atm=5 atm

Volume changed to =20 L

at constant temperature

$P_1V_1=P_2V_2$

$5 \times10=P_2\times20$

$P_2=2.5 atm$

SO here pressure becomes 2.5 atm