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Problem 9.4:
An insulated cylinder is divided by a partition into two compartments.
Compartment A contains 0.2 mol of pure methane at 50 °C, 1 bar. Compartment B contains 0.8 mol of a methane-ethane mixture at 100 °C, 1 bar with ymethane = 0.5. The partition is removed and the system reaches equilibrium. a) What is the composition of the final mixture? b) What is the temperature and pressure at the end of the process? c) Calculate the entropy generation. d) What is the change in the total Gibbs energy of the system? e) How much work is needed to separate the final mixture into A and B at the conditions before mixing? Assume that the temperature of the surroundings is 20 °C. f) Which of the above answer would change (and by how much), if both compartments contained methane? All other conditions are the same. Additional data: The ideal-gas CP 's of the pure components are: ethane: 10.3 R; methane: 6.2 R; where R is the ideal-gas constant.
A sealed tank contains saturated steam at 5 bar. The volume of the tank is1m3. Heat is added until the pressure in the tank pressure doubles. What is the final temperature?
discuss the operation of the flip-flop, and obtain a table indicating the state of normal output Q after the passage of one clock pulse for various combinations of the inputs JK.
Check to see that the six outputs (Y0 through Y5) display the number of hours, minutes, and seconds.
For the circuit shown in Figure P2.5.3, develop and execute a PSpice program to obtain the node voltages and the current through each element.
question 1a discuss in details on five types of health effects related to exposure to hazardous substances encountered
The dc resistance of the armature at this temperature is 0.0335 Ω per phase. Compute the effective armature ac resistance in per unit and in ohms per phase at 25°C.
For this assignment you will undertake an analysis based on a self-designed fictitious study that utilizes statistical analyses. You will first develop a fictitious problem to examine. It can be anything.
The product may bemobile or immobile; since the reaction is irreversible, it does not matter. Thisreaction shows the solute's penetration across the film. Write mass balancesfor the solute and the immobile reagent.
A strap, instrumented to measure stretch, is worn around the chest to detect respiration whilst a subject is at-rest. The resulting signal is contaminated by electrical noise from the mains at 50 Hz with a similar amplitude to the respiration sign..
Show the implementation of the same synchronous counter using D flip-flops.
Acetone is to be extracted from a solution in water, using 1,1,2-trichloroethane. The feed concentration is 45.0% w/w acetone. Determine the number of stages required to reduce the concentration of acetone to below 10%, using 32 kg of extraction-s..
A 25 wt% solution of coffee in water at 70°F is spray dried to a final moisture content of 5% (dry basis) with air that enters at 450°F and 1 atm with a humidity of 0.01 lb/lb (dry basis) and exits at 200°F. Assuming a reasonable value for the spe..
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