Answer
14117.65 g
Work Step by Step
It is given that a hard water sample contains 0.0085% Ca by mass.
So, 0.0085 g of Ca is present in 100 g of water.
For 1.2 g of Ca → ?
= (100 X 1.2)/(0.0085)
= 14117.6471 g of water
= 14117.65 g
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