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Answer the following:
 
Sonia performs an experiment to obtain pure water from a salt solution using distillation. He heats the solution, and the water evaporates, cools in the condenser, and is collected as pure liquid.
 
1. ​What is the role of the condenser in this experiment?
 
2. ​Name the process used to separate water from salt water.
 
3.​ Is this a physical process or a chemical process?