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(5 pts.) A laboratory assistant is preparing 4 liters of a 0.5M solution of sodium phosphate (NasPO4). How many grams of Na POs the laboratory assistant need to add to achieve the desired molar concentration? (5 pts.) The laboratory assistant found the hydrated form, Na,Po412H.O, in the lab instead of NasPO4. Should he/she change the amount of Na,PO.12H20 added? If so, what is the amount of NasPOs.12H2O to be added? a) b)
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