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Water at 300 K flows down the inner wall. Dry air enters the bottom of the pipe at the rate of 1.04 m3/min, measured at 308 K and 1 atm.
Aeration is a common industrial process and yet one in which there is often serious disagreement about correlations (Cussler, 1997).
In the artificial kidney, blood flowing inside a tubular membrane is dialyzed against well-stirred saline solution.
A 1-m square thin plate of solid naphthalene is oriented parallel to a stream of air flowing at 20 ds. The air is at 330 K and 101.3 kPa.
Molecular diffusion of gaseous reactant and products takes place through a gas film adjacent to the carbon surface.
A solution of carbon tetrachloride and carbon disulfide containing 50%by weight of each is to be continuously distilled at a rate of 5000 kg/h.
The LNG is heated to 320 K and 140 kPa, and vaporizes completely. Estimate the density of the gas mixture under these conditions.
The molar fractions of CO2, and 0, in a sample of the gas are 12% and 6%, respectively. The weight fraction of H2O in the gas is 6.17%.
A gas stream flows at the rate of 10.0 m3/s at 300 K and 102 kPa. It consists of an equimolar mixture of ammonia and air.
Air, stored in a 30-m3 container at 340 K and 150 kPa, is saturated with water vapor. Determine the following properties of the gas mixture.
To account for water losses in the cooling tower, part of the effluent from a nearby municipal wastewater treatment plant will be used as makeup water.
It is desired to dry 10 kg/min of soap continuously from 20% moisture by weight to 4% moisture in a countercurrent stream of hot air.
Estimate how much activated carbon should be used if the system is allowed to reach equilibrium at constant temperature and pressure.
Estimate the diffusion coefficient by the Wilke-Lee equation and compare it with the experimental value.
Oxygen diffusion in water: Hayduk and Minhas correlation Estimate the diffusion coefficient of oxygen in liquid water at 298 K.
Based on this result and the Hayduk and Minhas correlation for aqueous solutions, estimate the molar volume of allyl alcohol at its normal boiling point.
A shaft of radius rotates inside a sleeve of thickness or G. Frictional heat is generated at the interface at a rate.
A long electric cable generates heat at a rate qc. Half the cable is buried underground while the other half exchanges heat by radiation and convection.
Heat is generated at a rate qc in a spherical shell with inner radius and outer radius Heat is added at the outer surface at a uniform flux.
Heat is removed from the inside surface at a uniform flux Use a simplified radiation model and write the heat equation and boundary conditions.
One of the plane surfaces is insulated while the other exchanges heat by convection with an ambient fluid at The heat transfer coefficient is h.
Write the heat equation and boundary conditions for steady state one-dimensional conduction.
Produce histograms of both mortality and water hardness with, in each case, a kernel density estimate of the variable’s distribution superimposed.
Your original experimental data showing pH before and after adding drops of acid and/or base. This should be your notes from lab period with the teaching
The main purpose of the experiment is to measure the overall mass transfer coefficient of a Fresenius F80A hemodialyzer and to determine the resistances