Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole fraction
Partial pressure
Mole ratio
None of these

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Mass Transfer
The rate of solid-liquid extraction is limited by the

Phase change of the solute as it dissolves in the solvent
All of these
Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution
Diffusion of the solute through the solvent in the pores to the outside of the particle

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Mass Transfer
In steam distillation, the

Temperature is more than 100° C
Product must be immiscible with water
Temperature is higher than the boiling point of either component
Temperature is 100°C

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