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How can you separate salt from salt water without boiling any thing just by using gravity?

April 26, 2017boiling Chemistry gravity Mathematics Salt separate thing water

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How can you separate salt from salt water without boiling any thing just by using gravity?

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Certain “filters”, known as semipermeable membranes will let only water through and not solutes such as the ions Na+ and Cl-. By using pressure to push water through such a membrane, you can leave the salt on the other side. This process is called reverse osmosis.