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OpenStudy (anonymous):
what property of CaCO3 is used to separate it from SiO2? Is this a chemical or physical property? 3. An unknown sample of a mixture of salt and sand weighs 7.52 g before washing with water and 3.45 g after. What is the percent of sand in the sample? (Show all work.)
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OpenStudy (anonymous):
can anyone help with this?
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