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1. Given that: i) the cp of Al is given by cp=20.7+0.0124*T (J/mol/K) in the temperature range from 298 to 932 K, ii) the c, of Al;O3 is given by cp=106.6 + 0.0178*T - 2,850,000*T² (J/mol/K) in the temperature range from 298 to 1800 K, and iii) for Al2O3 its enthalpy of formation from elements at 298 K is -1675.7 kJ/mol, please calculate enthalpy content of Al and Al2O3 at 298 and 900 K.

1. Given that: i) the cp of Al is given by cp=20.7+0.0124*T (J/mol/K) in the temperature range from 298 to 932 K, ii) the c, of Al;O3 is given by cp=106.6 + 0.0178*T - 2,850,000*T² (J/mol/K) in the temperature range from 298 to 1800 K, and iii) for Al2O3 its enthalpy of formation from elements at 298 K is -1675.7 kJ/mol, please calculate enthalpy content of Al and Al2O3 at 298 and 900 K.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1. Given that: i) the cp of Al is given by c,=20.7+0.0124*T (J/mol/K) in the temperature range from 298 to 932 K, ii) the cp of Al2Oz is given by cp=106.6 + 0.0178*T - 2,850,000*T² (J/mol/K) in the temperature range from 298 to 1800 K, and iii) for Al2O3 its enthalpy of formation from elements at 298 K is -1675.7 kJ/mol, please calculate enthalpy content of Al and Al203 at 298 and 900 K.
Transcribed Image Text:1. Given that: i) the cp of Al is given by c,=20.7+0.0124*T (J/mol/K) in the temperature range from 298 to 932 K, ii) the cp of Al2Oz is given by cp=106.6 + 0.0178*T - 2,850,000*T² (J/mol/K) in the temperature range from 298 to 1800 K, and iii) for Al2O3 its enthalpy of formation from elements at 298 K is -1675.7 kJ/mol, please calculate enthalpy content of Al and Al203 at 298 and 900 K.
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