Consider the following reaction for the decomposition of hydrogen disulfide: 2 H2S(aq) <--> 2 H2(aq) + S2(aq) Kc = 1.67 x 10–7 A 0.500 L reaction vessel initially contains 0.0125 mol of H2S at 800°C. What are the equilibrium concentrations of H2 and S2?