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In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) | |
A. | 6.89 [Wrong Answer] |
B. | 8.89 [Correct Answer] |
C. | 10 [Wrong Answer] |
D. | 8.25 [Wrong Answer] |