At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g)<--> 2HI(g) Kc=53.3 At this temperature, 0.800 mol of H2 and 0.800 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?