The hardness of a water sample containing 10–3 M MgSO4 expressed as CaCO3 equivalents (in ppm) is ______. (molar mass of MgSO4 is 120.37 g/mol)

Question

The hardness of a water sample containing 10^–3 M MgSO₄ expressed as CaCO₃ equivalents (in ppm) is ______.
(molar mass of MgSO₄ is 120.37 g/mol)

Correct Answer

100

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