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1. |
A gas mixture input is given to a membrane with 40% O2 and 60% N2, the waste contains 80% of the input and the product contains 25% O2 and 75% N2, what is the percentage of O2 in the waste? |
A. | 0.22 |
B. | 0.44 |
C. | 0.66 |
D. | 0.88 |
Answer» C. 0.66 | |