initial commit / add all books

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+//ques-1.9

+//Calculating amount of lime and soda required to soften one million litres of water

+clc

+A=30;//content of Calcium cation (in mg/L)

+B=24;//content of Magnesium cation (in mg/L)

+C=24;//content of CO2 (in mg/L)

+D=50;//content of HCl (in mg/L)

+V=1000000;//volume of water sample (in L)

+p1=90;//Purity percentage of lime

+p2=94;//Purity percentage of soda

+a1=(A/40)*100;//CaCO3 equivalent of A (in mg/L)

+a2=(B/24)*100;//CaCO3 equivalent of A (in mg/L)

+a3=(C/44)*100;//CaCO3 equivalent of A (in mg/L)

+a4=(D/73)*100;//CaCO3 equivalent of A (in mg/L)

+lime=(a2+a3+a4)*(74/100)*V*(100/p1);//lime required (in mg)

+soda=(a1+a2+a4)*(106/100)*V*(100/p2);//soda required (in mg)

+printf("Lime required to soften one mllion litres of given water is %.1f kg and Soda required is %.1f kg.",lime/1000000,soda/1000000);