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Example 9.1: Non-Isothermal Mixing
A rigid insulated tank is divided into two parts, one that contains 50 mol of ethylene at 400 K, 1 bar, and the other contains 150 mol nitrogen at 300 K, 2 bar. The partition that divides the tank is removed and the contents are allowed to reach equilibrium. Determine the final pressure and temperature in the tank and determine the entropy generation. You may assume the pure gases and the final mixture to be in the ideal-gas state. The ideal-gas heat capacities of ethylene and nitrogen are 43 J/mol K and 29 J/mol K, respectively, and may be assumed independent of temperature.
The voltage across a 4 mF capacitor is (t) = (200,000t 50,000)e-2000t µ(t) V. Find current through the capacitor
From a three-phase, 60-Hz system, through a motor-generator set consisting of two directly coupled synchronous machines, electric power is supplied to a three-phase, 50-Hz system.
Safety considerations require that the maximum steady-state temperature of the system remain below 475°C. Will a spherical container with inner and outer diameters of 1.0 m and 1.2 m, respectively, satisfy this requirement?
Two moles of benzene are mixed with 3 moles of acetonitrile under constant temperature and pressure at 45 °C and 33 kPa. What is the phase of the mixture (vapor, liquid, or mixed)?
Assume that an ordinary mercury-in-glass thermometer follows first order dynamics with atime constant of 10s. It is at a steady state temperature of 0°C. At time t = 0, the ther mometeris suddenly immersed in a constant temperature bath at 100°C.
Use the three-element Kelvin model to describe the stress relaxation of a biomaterial of your choice. Using a stress response curve from the literature, compute the model spring constants K1 and K2 and the viscous damping coefficient b.
The typical vent-gas analysis from the recycle stream in an oxyhydrochlorination process for the production of dichloromethane (DCE) (British patent BP 1,524,449) is given below, percentages on volume basis.
1 when a thermocouple is moved from one medium to another medium at a different temperature the thermocouple must be
primitive problem statementa 100 million tonsyear chemical product as shown in the table 1 is to be manufacture as per
A 60-Hz, three-phase transmission line has a total per-phase series impedance of 35+j140 Ω. If it delivers 40 MW at 220 kV and 0.9 power factor lagging
Calculate the power factor for which the voltage regulation becomes zero on full load.
Construct a table that summarizes the Level 0 information that you have, and information that you might need to obtain. Comment on choices that might need to be reconsidered and why. Comment on what you will do about currently missing information.
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