p-Dichlorobenzene, C6H4Cl2, can be one of the ingredients in mothballs. Its vapor pressure at 20°C is 0.40 mm Hg.
(a) How many milligrams of C6H4Cl2 will sublime into an evacuated 750-mL flask at 20°C?
(b) If 5.0 mg of p-dichlorobenzene were put into an evacuated 750-mL flask, how many milligrams would remain in the solid phase?
(c) What is the final pressure in an evacuated 500-mL flask at 20°C that contains 2.00 mg of p-dichlorobenzene? Will there be any solid in the flask?
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