The dissolved Ca++ concentration in a river is approximately 30 mg/L.

This concentration is equivalent to ___ ppm
or ___ mol/L,
or ___ cmol/L.
It would provide ___ cmolc+/L.
(c+ is a subscript)

3 answers

30 mg/L is the same as 30 ppm.
how do you convert mg to moles?
mols = grams/molar mass