Mass Transfer
Flash distillation is

Same as differential distillation
Same as simple distillation
Used for multicomponent systems like crude refining
Most useful for handling binary systems

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

All of these
Phase change of the solute as it dissolves in the solvent
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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