Hardness of water

What is hardness of water & what causes it.

3 answers

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ANSWER #1 of 3

what they said ^
magnesium and calcium ions, sometimes you find bicarbonates and sulfates
you find Ca in the water through limestone or chalk or other mineral compounds


ANSWER #2 of 3

water "hardness" is caused by its mineral content. Water with a lot of dissolved minerals is called "hard" where water with little dissolved minerals is called "soft."

What is mineral water for?

ANSWER #3 of 3

hmm someone have a problem with the answers?

How long do hard boiled eggs last?

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