A(g) ---> 1 B(g) + 1 C(g) A sealed 1.731 L reaction vessel initally contains 4.091 x 10-3 mol A(g), 8.257 x 10-3 mol B(g), and 8.286 x 10-2 mol C(g) at 135 °C. When equilibrium is reached, the concentration of A(g) is 8.066 x 10-4 M. What is the equilibrium concentration for B(g)?