The vapor pressure of a volatile liquid can be determined by slowly bubbling a known volume of gas through it at a known temperature and pressure. In an experiment, 4.95 L of N2 gas is passed through 7.7059 g of liquid benzene, C6H6, at 28.0 ∘C and atmospheric pressure. The liquid remaining after the experiment weighs 5.9203 g .
Assuming that the gas becomes saturated with benzene vapor and that the total gas volume and temperature remain constant, what is the vapor pressure of the benzene in torr?
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