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+//water//
+//page 1.32 example 3//
+clc
+Purity_Lime=.74
+Purity_soda=.90
+W1=73;//amount of Mg(HCO3)2 in ppm//
+W2=222;//amount of CaCl2 in ppm//
+W3=120;//amount of MgSO4 in ppm//
+W4=164;//amount of Ca(NO3)2 in ppm//
+M1=100/146;//multiplication factor of Mg(HCO3)2//
+M2=100/111;//multiplication factor of CaCl2//
+M3=100/120;//multiplication factor of MgSO4//
+M4=100/164;//multiplication factor of Ca(NO3)2//
+P1=W1*M1;//in terms of CaCO3//2*L
+P2=W2*M2;//in terms of CaCO3//S
+P3=W3*M3;//in terms of CaCO3//L+S
+P4=W4*M4;//in terms of CaCO3//S
+V=5000;//volume of water in litres//
+L=0.74*(2*P1+P3)*V/Purity_Lime;//lime required in mg//
+L=L/10^3;
+printf("\n Amount of Lime required is %.f g",L);
+S=1.06*(P2+P3+P4)*V/Purity_soda;//soda required in mg//
+S=S/10^3;
+printf("\n Amount of Soda required is %.2f g",S) \ No newline at end of file