100 Kg mol of a gas mixture input is given to a membrane with 30% O₂ and 70% N

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Question

100 Kg mol of a gas mixture input is given to a membrane with 30% O₂ and 70% N₂, the waste contains 60% of the input and the product contains 10% O₂ and 90% N₂, what are the number of moles of O₂ in the waste?

Options:

A . 12

B . 16

C . 34

D . 42

Answer: Option C
Answer: (c).34

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