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We have a batch reactor ( r = -k1) with volume of V1. The concentration entering the batch reactor is Co. The batch reactor is operated from t =0 to t = t1. After that the water exits the batch reactor and enters a PFR (r = -k2C) with volume of V2. The water stays in PFR from t = t1to t = t2. What is the concentration of the chemical leaving PFR?
A cylinder fitted with a frictionless piston contains 2 kg of superheated refrigerant R-134a vapor at 350 kPa, 100oC. The cylinder is now cooled so that the R-134a remains at constant pressure un- til it reaches a quality of 75%.
The faster you try to open a screen door, the more resistance you encounter. When the door is released, the length of the closer decreases linearly with time until it returns to its intial length. Do any of the three viscoelastic models
Find an equation that expresses the relationship between the wages earned (x) and the Social Security taxes paid (y) by an employee who earns less than the maximum taxable wage base.
The plate OAB forms an equilateral triangle which rotates counterclockwise with increasing speed about point O. If the normal and tangential components of acceleration of the centroid C
If the engine is mounted solidly on a rigid foundation, what is the alternating force amplitude transmitted? Assume the connection rod to be of infinite length.
assume the pipe diameter is 4-inches, (f = 0.035), Distance from BC is 15-feet, distance DE is 180-feet and z = 60-feet. The elevation of C is 10-feet above the lower water surface.
Conduct either a qualitative or quantitative risk assessment on this project. Identify the risk factors that you consider most important for the suspension bridge construction. How would you assess the riskiness of the project? Why?
A room has a floor area of 500 m^2 and a height of 4 m. THe room is involved in a fire with a constant energy release rate of 1 MW. calculate the time till the smoke layer is 1.5 m from the floor for (a) the case where the leakage areas are at the ..
How many tons of asphalt concrete will be required to overlay a 3-mile-long, 24-ft.-wide road with 2.5 in. of wearing course asphalt concrete that has a density of 146.3 pcf
Find out the number of turns in each spring, if the diameter of the spring wire 14 mm and the diameter of coil is 80 mm. Assume C=84 GN/mmxmm.
The zebra mussels have a net growth rate of 0.09 yr-1. At the current time there are 176 zebra mussels in the stream. What is the predicted number of zebra mussels 5, 10, and 20 years from now
The shaft diameter is 100 mm. Calculate the largest principal stresses and maximum shear stress that will occur in the shaft.
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