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1) The mole fraction of sodium phosphate, Na3PO4, in an aqueous solution is 5.62×10-2 . The...

1) The mole fraction of sodium phosphate, Na3PO4, in an aqueous solution is 5.62×10-2 . The percent by mass of sodium phosphate in the solution is %.

2)An aqueous solution is 36.0 % by mass hydrochloric acid, HCl, and has a density of 1.18 g/mL.

The mole fraction of hydrochloric acid in the solution is

.

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