Mass Transfer
Pick out the system with minimum boiling azeotrope at 1 atm.

All of these
Hydrochloric acid-water
Benzene-toluene
Ethyl alcohol-water

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

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

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