Question

A balloon expands from 2500 L to 3500 L. If the final pressure was 700 mm Hg, what must the initial

ressure have been?

Answer 1

Apply boyle's law

P1/V1 = P2/V2

P1/ 2500 = 700/ 3500

P1 = 500 mm Hg

So, initial pressure = 500 mm Hg