How do you separate a mixture of sand, salt, water, ethanol and iron filings?
The first step will be the filtration of the mixture. On the filter will be sand and iron fillings, and liquid filtrate will be a salt solution in the water-ethanol mixture. Then we separate iron fillings from the sand with a magnet. After that we will evaporate water and ethanol from the liquid filtrate, so the dry salt will left. After condensation of the water-ethanol vapor we will distillate this mixture and obtain pure water and pure ethanol.