1. The problem statement, all variables and given/known data Gas A at 125KPa (abs) is compressed isothermally and gas B at 100kPa(abs) is compressed isentropically (Y = 1.4). Which gas is more compressible? 2. Relevant equations Compressibilty = 1/bulk's modulus Bulk's modulus = F/A/V/v or volume stress/volume strain 3. The attempt at a solution I'm not sure I'm using the right equation , ive also tried Q= w(Y-n)/(y-1), but for an adiabatic compression Q is always 0, so does that mean the isothermally compressed gas is more compressible??