both questions

Given the equilibrium reaction PCl5(g)PCl3(g)+Cl2(g) Calculate the number of moles of Cl2 produced at equilibrium when 1.00mol of PCl5 is heated at 246.9deg celsius in a vessel having a capacity of 10.0L. At 246.9,K=0.053 for this dissociation. Answer: Two gases are added to a 1.00L container: 2.0 moles of A;4.0 moles of B. These gases react as follows: A(g)+3B(g)C(g)+2D(g) At equilibrium the container contains 0.6 moles of D. Calculate the concentration of A at equilibrium. Include the appropriate unit and answer to 2 significant figures