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E(t) = square root ( Tau 2- (t-Tau)2)

Consider the case of evaporation of liquid nitrogen from a capillary at 77.4 K. The surface tension and liquid molar volume of nitrogen (Gregg and Sing, 1982) are: 0 = 8.72 x 10-3N/m Vm= 3.468 x 10-5 m3/mole. The vapour pressure of nitrogen at 77.4 K is 760 Torr. Pressure P = 475 Torr