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What is the mass flow rate of zinc in the scrap brass stream (ṁZn,3) in kg/h to 0 decimal place? What is the mass fraction of copper in the mixed scrap stream (xCu,4) to 2 decimal places?

What is the mass flow rate of zinc in the scrap brass stream (ṁZn,3) in kg/h to 0 decimal place? What is the mass fraction of copper in the mixed scrap stream (xCu,4) to 2 decimal places?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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What is the mass flow rate of zinc in the scrap brass stream (ṁZn,3) in kg/h to 0 decimal place?

What is the mass fraction of copper in the mixed scrap stream (xCu,4) to 2 decimal places?

Stream 1: Zinc ຕ່າ XZn,1 = 0.99 Stream 4: Mixed scrap Stream 2: Copper Charge hopper m₂ Xcu,2 = 0.99 m4 XCU,4 = ? Stream 3: Scrap Brass m3 = ? XCu.3 = 0.7 As shown in the picture above, the preparation of an alloy for casting is done by feeding controlled amounts of raw materials to a charge hopper until it has the correct quantity for the melting furnace. Here, 3889 kg/h of commercially pure zinc (XZn,1 = 0.99 and the rest copper) and 13068 kg/h of commercially pure copper (xCu,2 = 0.99 and the rest zinc) are mixed with an unknown amount of scrap brass (an alloy of zinc and copper) containing 70% copper (xCu,3 = 0.7) in a charge hopper to produce m4 = 27000 kg/h of mixed scrap with an unknown composition. Calculate the mass of scrap brass in stream 3 (m3) in kg/h to 0 decimal place.
Transcribed Image Text:Stream 1: Zinc ຕ່າ XZn,1 = 0.99 Stream 4: Mixed scrap Stream 2: Copper Charge hopper m₂ Xcu,2 = 0.99 m4 XCU,4 = ? Stream 3: Scrap Brass m3 = ? XCu.3 = 0.7 As shown in the picture above, the preparation of an alloy for casting is done by feeding controlled amounts of raw materials to a charge hopper until it has the correct quantity for the melting furnace. Here, 3889 kg/h of commercially pure zinc (XZn,1 = 0.99 and the rest copper) and 13068 kg/h of commercially pure copper (xCu,2 = 0.99 and the rest zinc) are mixed with an unknown amount of scrap brass (an alloy of zinc and copper) containing 70% copper (xCu,3 = 0.7) in a charge hopper to produce m4 = 27000 kg/h of mixed scrap with an unknown composition. Calculate the mass of scrap brass in stream 3 (m3) in kg/h to 0 decimal place.
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