- #1
sdoug041
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Homework Statement
A sample of water is known to have 190 g/m^3 Ca2+ and 84 g/m^3 Mg2+. What is the hardness of the water in mg CaCO3/L?
Homework Equations
Hardness = (Ca2+) + (Mg2+)
The Attempt at a Solution
I need to convert my units into mg CaCO3/L or Normality before summing up the values. The problem is I do not understand how to convert to either.
If I'm converting to mg CaCO3/L do I need a molar mass? And when do I use it?
As for normality I do not understand what a "weight equivalence" is so I can't convert to that either.
Thanks a lot.