It would be nice to know
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Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
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In today’s exercise, you will separate a heterogeneous mixture of salt, sand, and chalk (calcium carbonate, CaCO3).
Salt is the only compound in this mixture that readily dissolves in water, so washing the mixture with water will remove it from the other two components.
Addition of acetic acid (vinegar) will react with the chalk to produce carbon dioxide gas (CO2) and calcium chloride (CaCl2).
CaCl2 is soluble in water and easily separated from the sand, which is then left untouched by the acid.
Explain what the effect on the percentage of each component would be if the student did not fully dry the evaporating dish after Step 7.
Effect on Salt:
Effect on Sand:
Effect on Chalk:
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