Question: An aqueous solution with NaOH 10 g/L at the rate is 100 L/min and an organic compound with no NaOH at the rate 50 L/min were put into an extraction machine and produced aqueous solution with NaOH 1 g/L, what is the amount of NaOH in organic compound after extraction?

Options

A : 2 g/L

B : 5 g/L

C : 9 g/L

D : 15 g/L

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