in the gas-phase reaction A + B --> C + 2D, it was found that
when 2 mole A, 1 mole B, and 3 mole D were mixed and allowed to
come to equilibrium at 25oC, the resulting mixture
contained 0.79 mole C at a total pressure of 1 bar. calculate (a)
the mole fractions of each species at equilibrium, (b)
Kx (c) K and (d) deltarGo