# 0.894 moles of $N{H}_{3}$ is enclosed in a 5-litre container and heated to 620 K. If value of the equilibrium constant for the reaction $2N{H}_{3}⇋{N}_{2}+3{H}_{2}$ is 0.0395 at 629 K then concentration of NH3 at equilibrium will be

0.037

1.37

0.140

5.337

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