1. Determine graphically the partial molar volume of water and calculate the partial molar volume of sodium chloride in an aqueous solution with a mass fraction of 0.04, using the following data:
ϕ2 0.01 0.03 0.05 0.07 0.10
Vsp*104, m3/kg 9.91 9.63 9.40 9.23 9.03

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