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How do you separate sodium chloride, ammonium chloride, and sand?

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Ammonium chloride, sodium chloride, and sand can be separated from each other by using the following steps:

1) Sublimation for separation of ammonium chloride:

Ammonium chloride undergoes sublimation at a temperature of about 337.6 degrees Celsius and forms ammonia gas and hydrogen chloride gas. We can heat the mixture at this temperature and collect the gases that are produced...

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