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38. Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric acid and 0.880 g of CO2 is produced. What is the

38. Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric acid and 0.880 g of CO2 is produced. What is the percent of CaCO3 in the original mixture?

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