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+//ques-2.8
+//Calculating percentage of Sulphur in coal sample
+clc
+M=32;//Molar mass of Sulphur (in g)
+W=0.5;//Weight of coal sample (in g)
+w=0.05;//Weight of precipitate formed (in g)
+p=(w*M*100)/(233*W);//Percentage of Sulphur
+printf("The percentage of Sulphur in coal sample is %.4f.\n",p);