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Problem 10.15: The VLE data in the table below were obtained using the SRK equation. The system under consideration is carbon dioxide (1) and cyclohexane (2). Using only data given in this problem, answer the following questions: a) What is the saturation pressure of cyclohexane at 250 K? b) Calculate the solubility (mole fraction) of CO2 in cyclohexane at 250 K under total pressure of 1 bar. c) A vapor mixture of carbon dioxide/cyclohexane is to be separated by partial condensation in a vapor- liquid separator at 250 K so that carbon dioxide is received at a purity of 80%. Determine the pressure and the mole fraction of CO2 in the liquid. d) If the feed stream in the previous question contains 30% CO2 by mole, calculate the recovery of carbon dioxide (i.e., moles of CO2 in the purified stream as a percentage of moles CO2 in the feed). e) Clearly state and justify your assumptions.
A three-phase, wye-connected, 2300-V, four pole, 1000-kVA, 60-Hz synchronous machine has a synchronous reactance Xs = 5 Ω, a field resistance Rf = 10 Ω, and an approximately linear magnetization characteristic (Ef versus If ) with a slope Kag = 200 Ω..
What number should be in place of the 2 in the denominator for a spectrum to be emitted in the infrared region?
Describe how you would find the critical temperature for thermal damage. Do you expect that to be lower or higher than a constant temperature case of the same exposure duration?
Explain whether the following circuit allows the investigator to conduct a voltage clamp experiment. The unmyelinated axon is sealed at both ends. A silver wire is inserted inside the axon that eliminates Ra. Clearly state any assumptions.
All that is required is a four-stage counter which, having counted from 0000 to 1001 (i.e., decimal 0 to 9; ten states), resets to 0000 on the next clock pulse. Develop a block diagram of an asynchronous decade counter and show its timing diagram.
Explain the action of a pn-junction with bias. Consider both the forward bias and the reverse bias, and use sketches wherever possible.
U-235 undergoes many different fission reactions. For one such reaction, when U-235 is struck with a neutron, Ce-144 and Sr-90 are produced along with some neutrons and electrons.
Determine the analog output voltage when the binary input code is 1100. Also, find what reference voltage is to be used in order to obtain the corresponding decimal output voltage.
What tower diameter should be used for optimum conditions of minimum total cost per year?
A flow process produces work using water as the working medium. The process is as follows: steam of quality 50% at 1 bar is compressed adiabatically to 20 bar; is heated isothermally by absorbing 3500 kJ/kg of heat; is expanded adiabatically to an..
using the concept of a mass balance describe how environmental engineers and scientists model the carbon cycle in the
Dry ice is placed in the bottom of a capillary tube 6.2 cm long. Air is blown across the top of the tube.
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