Ammonia will decompose into nitrogen and hydrogen at high temperature. An industrial chemist studying this reaction fills a 2.0L flask with 1.1 atm of ammonia gas at 51.°C. She then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of hydrogen gas to be 0.50 atm. Calculate the pressure equilibrium constant for the decomposition of ammonia at the final temperature of the mixture. Round your answer to 2 significant digits.

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