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In a mechanical coal-washing process, a portion of the inorganic sulfur and ash material in the mined coal can be removed. A feed stream to the process consists of 73% coal, 11% ash, 11% sulfur, and 5.0% water (to suppress dust). The clean coal side of the process consists of 88% coal, 6.0% sulfur, 3.0% ash, and 3.0% water. The refuse side consists of 32% sulfur, with the remainder being ash, coal, and water. If 80 metric tons per hour of clean coal is required, determine the feed rate required for the mined coal and the composition of the refuse material. Also determine the mass rate for the refuse stream (in metric tons per hour).
suppose we wish to test the hypotheses ho u15 h1 u does not 15 where we know that sigma2 9.0. if the true mean is
determine the electrical power input to the pump. the density of water is 1kg/l.
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1. which of the following statements are true for the line defecta burger vector is parallel to dislocation in an edge
a u manometer reads 20 cm air as operating fluid and a given manometric fluid. a single branch closed tube reads 35 cm
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