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MMLU-Pro / 11806 / A drop of water is allowed to fall into dry still air at 1atmpressure with a…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A drop of water is allowed to fall into dry still air at 1atmpressure with a velocity of 225 cm sec^-1.The drop is sphericalin shape with 0.03cm diameter. The temperature of airis 145°F and the surface temperature of the drop is 70°F. The vapor pressure of water at 70°F is 0.0247 atm. Assuming pseudo steady state process, calculate the net rateof evaporation from the water drop.

category

engineering

options

  1. 1.324 × 10^-8gmole/sec
  2. 2.5 × 10^-7 gmole/sec
  3. 6.62 × 10^-7 gmole/sec
  4. 2.648 × 10^-6 gmole/sec
  5. 1.324 × 10^-6gmole/sec
  6. 1.324 × 10^-7gmole/sec
  7. 6.62 × 10^-8 gmole/sec
  8. 1.5 × 10^-7gmole/sec
  9. 0.75 × 10^-7 gmole/sec
  10. 2.124 × 10^-8 gmole/sec

src

stemez-TransportPhenomena

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