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A plant has two streams containing benzene and toluene, one with 37 percent benzene and one with 68 percent benzene. About equal amounts of the two streams are available, and a distillation tower with two feed points is proposed to produce 98 percent benzene and 99 percent toluene in the most efficient manner. However, combining the two streams and feeding at one point would be a simpler operation. For the same reflux rate, calculate the number of ideal stages required for the two cases.
the elastic modulus of diamond is measured by applying a force parallel to the body diagonal of the unit cell and
suppose you are marooned on an exotic island where the natives happen to speak english. their ways are primitive
develop the maxwell and kelvin-voigt relations. creep is deformation under constant stress while stress relaxation is
a ferromagnetic material has a remanence of 1.0 tesla and a coercivity of 15000 am. saturation is achieved at a
A steel cylinder with closed ends has an internal diameter of 160 mm and external diameter of 320 mm OD. It is subject to an internal pressure of 150 MPa. Determine the radial and tangential stress distributions
a carnot engine operates between temperatures of 700 and 369 k. to improve the efficiency of the engine it is decided
Compare it to that obtained from the regression line.
a vertical post consists of a steel pipe of 80 mm diameter and 6 mm wall thickness fixed at the bottom and free at the
How much money can be saved for 15,000 miles of driving per year and how much gasoline per year is being converted if one million people use the E20 fuel?
refrigerant 22 vapor enters the compressor of a refrigeration system at an absolute pressure of 20 lbfin.2. a pressure
What in your refuse might have been reusable (as distinct from recoverable), and if you had reused it, how much would this have reduced the refuse?
a room in the lower level of a cruise ship has a 30cm diameter circular window.if the midpoint of the window is 4m
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