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//Chapter-4,Example 17,Page 97
clc();
close();
q= 300 //heat energy
P= 2 // pressure in atm
V1= 10 // volume in litre
V2= 20 //volume in litre
//since 1 lit.atm = 24.25 cal
W=P*(V2-V1)*24.25 //work done
delta_E= q-W //from the 1st law of thermodynamics
printf('the change in internal energy is %.f cal',delta_E)
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