I have P_1 = 1 x 10^5 Pa p_2 = 11.764x10^5 Pa V_1 0.826 m^3 V_2 0.142 m^3 and Expansion / Compression Index of 1.4 I need to calculate Work Done. First of all i identify 1-2 as an Isothermal Process, which gives equation. W = P_2 * V_2 * ln (V_2 / V_1) If i use that formula i get an answer. What i am unsure of is 1) Am i using the right formula based on what data i have, i only have data that i have above. 2) How and what do i use expansion and compression index for? Thanks for any help, needed urgent to solve a question.