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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).
a dump truck is shown in the figure. the loaded container has a mass of 8000 kg and may be modelled as a solid
a gate having the cross section shown in fig. below closes an opening 5 ft wide and 9 ft high in a water reservoir. the
using the compressibility chart determine the volume in m3 occupied by 20 kg of hydrogen h2 at 11.55 atm and -364 degf.
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what will be the final temperature in the tank? how much work will be accomplished over the course of the entire process?
consider a heat pump that operates on the ideal vapor compression refrigeration cycle with r-134a as the working fluid
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