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+//Chemical Engineering Thermodynamics
+//Chapter 3
+//First Law of Thermodynamics
+
+//Example 3.1
+clear;
+clc;
+
+//Given
+W = -((2*745.6*(10^-3)/4.18)*3600);//work added to the system in Kcal/hr
+m = 10;//Amount of fluid in tank in Kg
+Q = -378;//Heat losses from the system in Kcal/hr
+
+//To calculate the change in internal energy
+delE=(Q-W)/m;// Change in internal energy in Kcal/hr kg
+mprintf('Change in Internal energy is %f Kcal/hr Kg',delE);
+//end
+\ No newline at end of file