the concentration of ca(Hco3)2in a sample of hard water is 500ppm.the density of water sample is 1.0gm/ml. calculate the molarity of solution.
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molar mass of CA(Hco3)2 is 40+2+1+12+48 -. 162g
since the concentration is 500pmp
no of moles will be 0.500gm/162g
-- 0.003806moles
density is 1g/ml i.e 1000ml of solution contains 0.003806 moles of solute
the molarity 0.003806M
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