Final answer:
Evaporation is the technique used to separate salt from water by heating the saltwater solution and collecting the water vapor separately.
Step-by-step explanation:
If you want to separate salt from water, you would use evaporation as a technique. Evaporation involves heating the saltwater solution to a point where the water evaporates, leaving behind the salt crystals. The water vapor can then be condensed and collected separately.
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