Balloon pressure: Volume 7 L is 100 kPa. Temperature stays same. Pressure increased on balloon by 250 kPa. New volume?

Question

The pressure on a balloon that has a volume of 7 L is 100 kPa. If the temperature stays the same and the pressure on the balloon is increased by 250 kPa, what is the new volume of the balloon?

Answer 1

At constant temperature, pressure and volume are inversely proportional.

 

P₁V₁ = P₂V₂ ⇒

 

V₂ = P₁V₁/P₂ = (100 kPa)(7 L) / [(100 + 250) kPa)] = ? L

 

You finish from here.