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
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Answer:
18 x 10-5 mol/l
Explanation:
is right answer
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