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It is proposed to reduce the concentration acetaldehyde in aqueous solution from 55% to 5% by mass, by extraction with solvent S at 293K. If a counter current multiple contactor process is adopted and 0.025 kg/s of solution are treated with an equal quantity of solvent, determine
(b) the number of theoretical stages required
(c) the concentration of the extract
(d) the mass of the extract from the first stage.
The equilibrium relationship at 293 K
estimate the total cost and cost per linear foot for furnushing and driving steel-sheet piling for construction of the basement of a building, 150 by 240 ft. the piles will be 22 in. wide, 18 ft. long, and weigh 40.3 Ib/Lin ft.
A water line to a home is usually 3⁄4" copper tube. What is the flow rate that can be delivered and still maintain laminar flow in the tube?
If A and B are both made of wood and are 3/8 in thick, determine to the nearest ¼ in the smallest dimension h of the support so that the average shear stress does not exceed \tauallow = 300 psi.
A small city is evaluating disinfection requirements for their drinking water plant. With an average flow of 5 MGD and a peak flow of 9 MGD, determine the controlling CT factor (virus or giardia) when the water temperature is 23 degrees C.
38 mL of 0.02 N HCl is added to neutralize 50.0 mL of lime water (Ca(OH)2). Calculate the hardness of lime water as mg/L as CaCO3 and mg/L as Ca(OH)2.
A gas flows along the x axis with a speed of v = 5x m/s and a presure of p = 10x^2 N/m^2, where x is in meters.
What is (are) the reason(s) for organisms that have mercury concentrations different than what is predicted to occur just by bioconcentration
Determine the deflection at the mid span of a simple beam (wood joist) of a row house. The joist is designed as 2x12@16'' for DL = 12psf and LL=40 psf.
The average flow rate of the River Tiger into the lake was determined to be 3.5 m3/s and the average flow rate of the River Yankee out of the lake was measured at 2.5 m3/s (ignore any loses due to evapotranspiration).
The car was travelling on a 3% upgrade on a pavement with friction factor of 0.30. How much further would the car have skid if it did not strike the concrete barrier?
Create a precedence (activity-on-node) diagram based off the attached activity list. You must follow the below recommendations as we discussed in class. 1) draw nodes as rectangles. It helps define the left side as starting and the right side as en..
At point 1 and point 2, it is also measured that dv1/dt = 20 m/s^2 and dv2/dt = 50 m/s^2 respectively. Determine the local acceleration, the convective acceleration, and the total acceleration at point 1 and 2 at t = 0
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