Question

What is the molar concentration of Ca2+ ions in a water sample with a hardness count of 180 mg CaCO3/L?if we consider that water contains only Ca2+ ions.

a) 18 x 10-6 mol/l
b) 18 x 10-7 mol/l
c) 18 x 10-8 mol/l
d) 18 x 10-5 mol/l

Answer 1

Answer:

18 x 10-5 mol/l

Explanation:

is right answer