A gas mixture of species 1 and 2 at 300 K and 30 bar perfectly obeys the Lewis fugacity rule. What is the enthalpy of mixing? Choose one of the following answers, and explain your reasoning. (Δhmix , 0 if attractive interactions dominate at 300 K and 30 bar/Δ hmix . 0 if attractive interactions dominate at 300 K and 30 bar/Δ hmix = 0/You cannot tell without more information).