n-hexane is being evaporated from a solid with nitrogen gas. At a point in the dryer where the gas is at 70oF and 1.1 atm, with a relative humidity for hexane of 25%, determine: (a) partial pressure of hexane at that point; (b) humidity of the nitrogen–hexane mixture; (c) percentage humidity of the nitrogen–hexane mixture; and (d) mole fraction of hexane in the gas.

What is the relative humidity of a 22°C air sample with a mixing ratio of 8 g/kg? (Round to the nearest whole number)

Calculate the bubblepoint temperature (in °F) of a liquid mixture containing 60 mol% n-butane, 25mol% n-pentane, and 15% n-hexane at 150 psia.

Which of the following properties of ozone (a pollutant in the lower atmosphere but part of a protective shield against UV light in the upper atmosphere) are physical, and which are chemical? • bluish color• pungent odor• very reactive• decomposes on exposure to ultraviolet light• gas at room temperature

A 20 wt% chloroform solution is obtained by mixing chloroform, CHCl3, with acetone, C3H₂O, in an insulated mixer at steady state. For every gram of solution, 9.83 J is removed to keep the system temperature constant at 14°C. Determine the enthalpy of mixing for this solution.

A gas containing argon, benzene, toluene is in equilibrium with 35 mol% Benzene and 65 mol % toluene liquid mixture at 85 C degrees and 10 atm. Determine the gas phase composition.

The result of air temperature measurement obtained dry ball temperature 37°C and wet ball temperature 27.5 °C. Using a graph of psychotry, determine the properties of the air as follows:a. RH : %B. Moisture content : kg of water / kg of airc. Specific volume : m3/kgd. Enthalpi : kJ/kgE. Condensation temperature : °CIf the air is within 162 m3 of space, specify theF. Weight of air (dry air and moisture) : Kgg. amount of water content in the room: kg

A saturated solution containing 150 kilograms of sodium sulfate (mol. wt. = 142) in 600 kilograms of water is fed to Swenson-Walker crystallizer. The solubility of sodium sulfate at 10 °C is 9 kilogram of anhydrous salt per 100 kilogram of water, and the deposited crystals consist of the decahydrate (mol. Wt. = 322). Crystallization is by cooling at 10 °C. If 2% of the water was lost by evaporation during the cooling process, the percent (%) yield in the crystallizer is Blank 1%. **(Express your answer to two (2) decimal places. Do not put units on your answer)**

Calculate (a) the specific volume, (b) the enthalpy, and (c) the absolute humidity of the air at 50 ° C and the relative humidity of 24 %, at a barometric pressure of 770 mm Hg.

Topic: Introduction to Chemical Engineering Thermodynamics