Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this: 3 NO,(g)+H,0(1)→2 HNO3(aq)+NO(g) At a certain temperature, a chemist finds that a 7.5 L reaction vessel containing a mixture of nitrogen dioxide, water, nitric acid, and nitrogen monoxide at equilibrium has the following composition: compound amount NO2 7.5 g H,0 169.9 g HNO3 13.4 g NO 10.1 g Calculate the value of the equilibrium constant K, for this reaction. Round your answer to 2 significant digits. K =

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