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Ethyl acetate is made from acetic acid and ethyl alcohol. Let x = pounds of acetic acid input, y=pounds of ethyl acohol input, and z = pounds of ethyl acetate output. The relationship of output to input is: z^2/(1.47x - z)(1.91y - z) = 3.9.
(a) determine the output of ethyl acetate per pound of acetic acid, where the ratio of acetic acid of ethyl alcohol is 2.0, 1.0, and 0.67, and graph the results.
(b) graph the cost of material per pound of ethyl acetate for each of the ratios given and determine the ratio for which the material cost per pound of ethyl acetate is a minimum if acetic acid costs $0.80 per pound and ethyl alcohol costs $0.92 per pound.
Water is at 9000 kPa and 300 degrees celcius and flows through a partially open valve. Pressure immediately after the valve is measured to be 600 kPa. Calculate the specific internal energy of the water leaving the valve. Neglect kinetic energy ch..
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Normal load at failure was 93.8N with a maximum shear load of 38.7N. Find stresses on the failure plane, sketch a graph showing these on the shear stress and normal stress axes. Find the friction angle and shear strength.
Determine the critical load of a round wooden dowel that is 0.9m long and has a diameter of (a) 10mm (b) 15mm. Use E=12GPa
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an insulated tank is evacuated. Air from the atmosphere at 12 psia and 70 degrees farenheight is allowed to flow into the 100 cubic foot tank. What is the final temp and the final mass of air in the tank just after flow ceases.
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