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+
+//Ex1_13
+
+clc;
+
+//Given:
+
+e=200; // in Mev
+m=0.235; // weight of uranium atom in Kg
+enthalpy=393.5; // in KJ/mol
+Na=6.02*10^23;
+
+
+//solution:
+e1=e*1.6*10^-19*10^6;
+atoms=Na/m;
+e2=atoms*e1;//energy released in J
+m1=(e2*12)/(393.5*1000*1000);// in Kg
+m2=m1/1000;// in tons
+printf("\n The amount of coal required in Kg is = %f", m2)