please help correct both, idk what i did wrong

Consider 1.70mol of carbon monoxide and 3.00mol of chlorine sealed in a 3.00L container at 476C. The equilibrium constant, Kc, is 2.50 (in M1 ) for CO(g)+Cl2(g)COCl2(g) Calculate the equilibrium molar concentration of CO. Answer: For the reaction: 2HI(g)H2(g)+I2(g)Keq=0.016 Initially a container contains 0.37M of HI and no product. What is the equilibrium concentration of H2