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1. |
An aqueous solution with sulfur 10 g/L at the rate is 100 L/min and an organic compound with no sulfur at the rate 50 L/min were put into an extraction machine and produced aqueous solution with sulfur 1 g/L, what is the amount of sulfur in organic compound after extraction? |
A. | 2 g/L |
B. | 5 g/L |
C. | 9 g/L |
D. | 15 g/L |
Answer» D. 15 g/L | |