Relative contributions of the mixing terms ΔV and ΔS to the total specific volume 1/ρ_H − He and entropy S_H − He, respectively, as a function of pressure and temperature. The solid black line corresponds to the Jupiter adiabat from Miguel et al. (2022). The values of ΔV × ρ_H − He and ΔS/S_H − He are calculated for X^* = 0.725 and Y^* = 0.275. The hashed areas correspond to the region in which the mixing volume and entropy are invalid (see Chabrier et al. 2019, for more details).