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For the successful operation of a reverse-osmosis freshwater generator, why is the high pressure pump required to operate in the 750 to 1200 psig range for a discharge pressure?
A) To overcome the pore size of the semi-permeable membrane.
B) To successfully force the salt water through the chemical pre-treatment device.
C) To overcome the osmotic pressure generated by the difference in solution concentrations.
D) To successfully force the salt water through the pre-filter (or pre-filters).
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