The Ca2+ concentration and Mg2+ concentration of a water sample are 160 mg/L and 40 mg/L as their ions respectively. The total hardness of this water sample in terms of CaCO3 in mg/L is approximately equal to

The Ca2+ concentration and Mg2+ concentration of a water sample are 16

1.	The Ca2+ concentration and Mg2+ concentration of a water sample are 160 mg/L and 40 mg/L as their ions respectively. The total hardness of this water sample in terms of CaCO3 in mg/L is approximately equal to
A.	120
B.	200
C.	267
D.	567
Answer» E.

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The Ca2+ concentration and Mg2+ concentration of a water sample are 160 mg/L and 40 mg/L as their ions respectively. The total hardness of this water sample in terms of CaCO3 in mg/L is approximately equal to

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