For the equilibrium L i C l . 3 N H 3 ( s ) ⇌ L i C l . N H 3 ( s ) + 2 N H 3 ( g ) ; K P = 9 a t m 2 at 310 K. A 5 L vessel contains 0.1 mole of L i C l . N H 3 . How many mole of N H 3 should be added to the flask at this temperature derive the backward reaction for completion? (use R = 0.082 atm-L/mol K) [Report your answer upto two decimal places.]