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//water//
//page 1.90 example 4//
clc
Hardness=480//Hardness of water(mg/lit) or ppm//
H=Hardness/100//Hardness of water(gms/lit)//
volume_NaCl=300//Volume of NaCl//
conc_NaCl=150//% NaCl consumed by zeolite bed//
Wt_per_Litre=conc_NaCl*10//gms NaCl consumed by zeolite bed per litre//
total_wt=Wt_per_Litre*volume_NaCl//total gms NaCl consumed by zeolite bed//
CaCO3_equivalent=total_wt*50/58.5//in terms of (gms/lit)//
volume_hardwater=CaCO3_equivalent/H
printf("\nQuantity of water softened using zeolite bed is %.f litres",volume_hardwater);
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