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Chemistry
Chemistry
Problem
One litre of sample of hard water contains 1 mg of
CaCl
2
\text{CaCl}_2
CaCl
2
and 1 mg of
MgCl
2
\text{MgCl}_2
MgCl
2
. Find the total hardness of water in terms of
CaCO
3
\text{CaCO}_3
CaCO
3
per
10
6
10^6
1
0
6
parts of water by mass.
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