How much nitrogen must be added to a 20% nitrogen solution to obtain 100 Kg of 4

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Question

How much nitrogen must be added to a 20% nitrogen solution to obtain 100 Kg of 40% nitrogen solution?

Options:

A . 10 Kg

B . 25 Kg

C . 50 Kg

D . 75 Kg

Answer: Option B
Answer: (b).25 Kg

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