Answered

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A student mixes 20.0g of white KCl crystals with distilled water in a beaker. After the mixture was stirred, no crystals are visible and the solution is clear. After several days, all of the water evaporates and white crystals are found in the beaker. Which of following pieces of experimental evidence would best help the student to confirm that a new compound had not been made and that only a physical change occurred?

Sagot :

AnaLauraCS21

Answer:

After the water has evaporated, the white crystals in the beaker have a mass of 20.0g.

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