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+//Example 2.1
+clear;
+clc;
+
+//Given
+p1=10;//initial pressure in atm
+p2=510;//final pressure in atm
+R=0.082;// gas constant in L atm K^-1 mol^-1
+T=300;// temperature in K
+
+// To determine enthalpy change delH
+delH=(0.039-((2*1.34)/(R*T)))*(p2-p1);//using the given equation for joule-thomson coefficient in dm^3 atm mol^-1
+delH1=delH*(1.01325*100);// enthalpy change in joule mol^-1
+mprintf('change in enthalpy = %f Joule mol^-1',delH1);
+//end
+\ No newline at end of file