43. Solution to Chemistry Problem
21. Calculate the change in entropy during heating (cooling) at constant pressure in the temperature range from T1 to T2 g kg of substance A, if its melting and boiling points, heat capacities in solid, liquid and gaseous states, heats of fusion and evaporation* are known.
Option Substance A g, kg T1, K T2, K
21 C8H10 (o-xylene) 60 423 223
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