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//Chapter-4,Example 9,Page 95
clc;
close;
delta_H2= 2386 //enthalpy for.. yellow P---> H3PO4
delta_H3= 2113 //enthalpy for.. red P---> H3PO4
delta_HT = delta_H2- delta_H3 //enthalpy for...yellow P ---> red P
// According to Hess's Law... delta_H1 = delta_H2 - delta_H3
delta_HT = delta_H2 - delta_H3 // delta_H1 = delta_HT
printf('the enthalpy change of transition from yellow P to red P is %.f cals',delta_HT)
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