A 0.0300-m3 steel tank containing helium is stored at 20.0C under a pressure of 22.5 x 103

Question:

A 0.0300-m3 steel tank containing helium is stored at 20.0°C under a pressure of 22.5 x 103 kPa.
(a) If the helium is released into a standard 20.0°C, 1010-kPa atmosphere, how much volume will the helium occupy?
(b) How much volume will the released helium occupy if released into a –28.5°C, 285-Pa stratosphere?