The age of water or wine may be determined by measuring its radioactive tritium content. Tritium is formed via cosmic radiation of water in the upper atmosphere, and decays spontaneously by a first order process with a half-life of 12.5 years. Suppose that a wine vendor sells a certain wine for which he desires a premium price. The tritium content of this wine is found to be only 10 % as radioactive as a new bottled specimen.

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant