what are the main cause of hardness of water
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Explanation:
Water becomes hard by being in contact with soluble, divalent, metallic cations. The two main cations that cause water hardness are calcium (Ca2+) and magnesium (Mg2+). Calcium is dissolved in water as it passes over and through limestone deposits.
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Answer:
Presence of Mg and Ca.
Explanation:
Presence of cations like Magnesium and Calcium is the main cause of hardness of water.
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