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Consider the sublimation of mothballs at 27 C in a room having dimensions 7.5ft x 11.0ft x 7.1ft. Assume that the mothballs are pure solid naphthalene (density 1.16 g/cm3) and that they are spheres with a diameter of 12.0 mm. The equilibrium constant Kc for the sublimation of naphthalene is 5.40 x 10 -6 at 27 degrees C.

C10H8 (s) (double bars) C10H8 (g)

When excess mothballs are present, how many gaseous naphthalene molecules are in the room at equilibrium?

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