A sample of solid NH4NO3 was placed in an empty container. It decomposes according to the following reaction: NHẠNO3 (s) + N20 (g) + 2H20 (g) At equilibrium, the total pressure in the container is 2.25 atm. Calculate Kp- O Need to know mass of NH4NO3 O 1.69 O 1.13 О 2.25 O 0.422

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