7. The dependence of saturated vapor pressure over a solid and liquid substance is given. Determine the coordinates of the triple point, the values of the molar enthalpies of sublimation and evaporation of this substance. Determine the heat of fusion of the substance.
over solid matter
T,K 229 248 257 257 273
r, Pa 103 694.5 1333 2966 4786
Above the liquid
T, K 283 298 307 313 317
p, Pa 7200 12697 16396 18929 21328
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