Chalkboard chalk is made from calcium carbonate and calcium sulfate, with minor impurities such as SiO 2

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Chalkboard chalk is made from calcium carbonate and calcium sulfate, with minor impurities such as SiO2 . Only the CaCO3 reacts with dilute HCl(aq). What is the mass percent CaCO3 in a piece of chalk if a 3.28 g sample yields 0.981 g CO2(g)?

CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)


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Related Book For  answer-question

General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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