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A greenhouse contains 256 m3 of air at a temperature of and a humidifier in it vaporizes 4.20 L of water, (a) What is the pressure of water vapor in the greenhouse, assuming that none escapes and that the air was originally completely dry (d of H2O = 1.00 g/mL)? (b) What total volume of liquid water would have to be vaporized to saturate the air (i.e., achieve 100% relative humidity)?
Mercury (Hg) vapor is toxic and readily absorbed from the lungs. At mercury ( Hvap = 59.1 kJ/mol) has a vapor pressure of torr, which is high enough to be hazardous. To reduce, the danger to workers in processing plants, Hg is cooled to lower its vapor pressure. At what temperature would the vapor pressure of Hg be at the safer level of torr?
On a humid day in New Orleans, the temperature is and the partial pressure of water vapor in the air is 31.0 torr. The 9000-ton air-conditioning system in the Louisiana Superdome maintains an inside air temperature of also, but a partial pressure of water vapor of 10.0 torr. The volume of air in the dome is and the total pressure inside and outside the dome are both 1.0 atm. (a) What mass of water (in metric tons) must be removed every time the inside air is completely replaced with outside air? (Hint: How many moles of gas are in the dome? How many moles of water vapor? How many moles of dry air? How many moles of outside air must be added to the air in the dome to simulate the composition of outside air? (b) Find the heat released when this mass of water condenses.
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