Mass Transfer
Mass transfer co-efficient is defined as

Flux = Co-efficient/concentration difference
None of the listed here
Co-efficient = Flux/concentration difference
Flux=concentration difference/co-effi-cient

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Mass Transfer
The term "cooling range" in a cooling tower refers to the difference in the temperature of

None of the listed here
Cold water leaving the tower and the wet bulb temperature of the surrounding air
Hot water entering the tower and the wet bulb temperature of the surrounding air
Hot water entering the tower and the cooled water leaving the tower

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