1. The molar enthalpy of a ternary mixture of species a, b, and c can be described by the following expression: a. hm = -5000xa - 3000xb - 2200xc-500xaxbxc [J/mol] b. Come up with an expression for Ha. c. Calculate Ha for a solution with 1 mole a, 1 mole b, and 1 mole c. d. Calculate Ha for a solution with 1 mole a but with no b or c present. e. Calculate Hb for a solution with 1 mole b but with no a or c present.