1. At room temperature (20 deg. Celsius) there is a low rate sublimation of iodi

Question

1. At room temperature (20 deg. Celsius) there is a low rate sublimation of iodine molecules. Compare their average velocity after leaving the solid with that at the temperature of the experiment of diffusion of iodine.

2. A student weighed a chunk of solid CO2 as 1.82 gram. What is the gas-to-solid volume ratio if the sublimated chunk produced gaseous carbon dioxide with volume 0.85 liter at atmospheric pressure. The additional necessary datum is given in the text (Analysis).

Additional Info:

Vgas/Vsolid= D^3/d^3=Cexp

Density of Solid= 1.56g/cm^3

Explanation / Answer

1. V = sqrt(3RT/M) = sqrt( 3*8.31*293/126.9) = 7.59 m/s

2. Vgas/Vsolid = 0.85 / (1.82/1.56 /1000) = 728.57

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