When making ice cream, the ingredients must be kept below 0.00 ˚C in an ice-salt bath. Assuming the salt dissolves completely, what mass, in g, of Na3PO4 would be needed to lower the melting point of 2.66 kg of ice to -5.39 ˚C? You may ignore ion pairing. Na3PO4 = 163.94 g/mol, Kf = 1.86 ˚C/m for water

Note: Do not use scientific notation or units in your response. Sig figs will not be graded in this question, enter your response to four decimal places.