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A mixture of sand and table salt can be separated by filtration because the substances in the mixture differ in( I) boiling point (2) density at STP(3) freezing point (4) solubility in water
The answer is (4) solubility in water. When you put the mixture into water, the salt will dissolve and sand will not. The you can separated them by filtration will solution can pass through and sand will be left.
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