Question

12. A hard water sample contains the following dissolved salts per litre :
(i) Ca(HCO), = 0.405 g
(ii) MgSO, = 0.24 g
Calculate its degree of hardness on p.p.m. scale. Given At. wt. of Ca = 40, Mg = 24,
S = 32.
[Ans. 450 p.p.m.]​

Answer 1

Answer:

yes it is hard it can not be broken