Question

what is meant by hard water​

Answer 1

Answer:

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Explanation:

The water which have more contains of magnesium(Mg), sodium(Na) and Calcium(Ca) is called hardwater. It is not good for drinking.

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Answer 2

Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.

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