A 389.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C. (heat capacity of solid = 2.96 J/g•°C; heat capacity of liquid = 1.75 J/g•°C; AHfus = 8.04 kJ/mol; normal freezing point, Tf = 17.6 °C) How much energy (in kJ) is absorbed/released to heat the solid?

A 389.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C. (heat capacity of solid = 2.96 J/g•°C; heat capacity of liquid = 1.75 J/g•°C; AHfus = 8.04 kJ/mol; normal freezing point, Tf = 17.6 °C) How much energy (in kJ) is absorbed/released to heat the solid?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter12: Thermodynamic Processes And Thermochemistry

Section: Chapter Questions

Problem 14P

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